Judge whether the following equation is a linear equation:
①-3x-6x2=7()
③5x+ 1-2x=3x-2()
④3y-4=2y+ 1。 ( )
Judge whether the solution of the following equation is correct:
① Solve equation 3y-4=y+3.
Solution: 3y-y=3+4, 2y=7, y=3.5.
② Solving equation: 0.4x-3=0. 1x+2.
Solution: 0.4x+0.1x = 2-3; 0.5x=- 1，x=-2
③ Solving the equation
Solution: 5x+ 15-2x-2 = 10, 3x =-3, x =-1;
④ Solving the equation
Solution: 2x-4+5-5x=- 1, -3x=-2, x=. ()
2) Fill in the blanks:
(1) If 2(3-a)x-4=5 is a linear equation about x, then a≦_
(2) The solution of equation ax=3 about X is a natural number, so the value of integer A is _
(3) The solution of equation 5x-2(x- 1)= 17 is _
(4) If x = 2 is the solution of equation 2x-3=m-, then m=_.
(5) If -2x2-5m+ 1=0 is a linear equation about x, then m=_.
(6) When y=_, the algebraic expressions 5y+6 and 3y-2 are reciprocal.
(7) When m=_, the solution of the equation is 0.
(8) If a≠0 is known, the solution of equation 3ab-(a+b)x=(a-b)x about x is _ _ _ _ _.
3) Multiple choice questions:
The solution of (1) equation ax=b is ().
A. there is a solution x = B. There are countless solutions
C. No solution D. When a≠0, x=
(2) Solve equation (x- 1)=3. Among the following variants, the simpler one is ().
A. multiply both sides of the equation by 4 to get 3( x- 1)= 12.
B. remove the brackets and get x- =3.
C. divide both sides by the same number to get x- 1=4.
D. finish, acquire
(3) Equation 2- Denominator ()
a . 2-2(2x-4)=-(x-7)b . 12-2(2x-4)=-x-7
C.12-2 (2x-4) =-(x-7) D. None of the above answers are correct.
(4) If the algebraic ratio is greater than 1, the value of x is ().
13 BC
(5)x= 1.5 is the solution of equation ().
A.4x+2=2x-(-2-9)
B.2{3[4(5x- 1)-8]-2}=8
C.4x+9 =6x+6
4) Answer the following questions:
When (1)x is equal to what number, are the values of algebraic expressions equal?
(2) When y is equal to what number, the value of the algebraic expression is 3 less than that of the algebraic expression?
(3) When m is equal to what number, the sum of the value of algebraic expression 2m- and the value of algebraic expression is equal to 5?
(4) Solve the following equation about x:
①ax+b = bx+a； (a≠b)；
Three. Simplify and simplify the assessment
Cross-cultural assessment:
1 、-9(x-2)-y(x-5)
(1) simplifies the whole equation.
(2) When x=5, find the solution of y.
2、5(9+a)×b-5(5+b)×a
(1) simplifies the whole equation.
(2) When a=5/7, find the value of the formula.
3、62g+62(g+b)-b
(1) simplifies the whole equation.
(2) When g=5/7, find the solution of b.
4、3(x+y)-5(4+x)+2y
(1) simplifies the whole equation.
5 、( x+y)(x-y)
(1) simplifies the whole equation.
6、2ab+a×a-b
(1) simplifies the whole equation.
7、5.6x+4(x+y)-y
(1) simplifies the whole equation.
8、6.4(x+2.9)-y+2(x-y)
(1) simplifies the whole equation.
9 、( 2.5+x)(5.2+y)
(1) simplifies the whole equation.
10、9.77x-(5-a)x+2a
(1) simplifies the whole equation.
Substitute x =-2, y x=-2, y=0. 1, a=4, b= 1 4 and b= 1 into the following formulas for evaluation.
3(x+2)-2(x-3)
5(5+a)×b-5(5+b)×a
62a+62(a+b)-b
3(x+y)-5(4+x)+2y
(x+y)(x-y)
2ab+a×a-b
5.6x+4(x+y)-y
6.4(x+2.9)-y+2(x-y)
(2.5+x)(5.2+y)
9.77x-(5-a)x+2a
1) 66x+ 17y=3967
25x+y= 1200
Answer: x=48 y=47.
(2) 18x+23y=2303
74x-y= 1998
Answer: x=27 y=79
(3) 44x+90y=7796
44x+y=3476
Answer: x=79 y=48
⑷76x-66y = 4082
30x-y=2940
Answer: x=98 y=5 1.
(5) 67x+54y=8546
7 1x-y=5680
Answer: x=80 y=59
(6) 42x-95y=- 14 10
2 1x-y= 1575
Answer: x=75 y=48
(7) 47x-40y=853
34x-y=2006
Answer: x=59 y=48
(8) 19x-32y=- 1786
75x+y=4950
Answer: x=66 y=95
(9) 97x+24y=7202
58x-y=2900
Answer: x=50 y=98
( 10) 42x+85y=6362
63x-y= 1638
Answer: x=26 y=62
( 1 1)85x-92y =-25 18
27x-y=486
Answer: x= 18 y=44.
( 12) 79x+40y=24 19
56x-y= 1 176
Answer: x=2 1 y= 19.
( 13) 80x-87y=2 156
22x-y=880
Answer: x=40 y= 12.
( 14) 32x+62y=5 134
57x+y=2850
Answer: x=50 y=57
( 15) 83x-49y=82
59x+y=2 183
Answer: x=37 y=6 1.
( 16) 9 1x+70y=5845
95x-y=4275
Answer: x=45 y=25.
( 17) 29x+44y=528 1
88x-y=3608
Answer: x=4 1 y=93.
( 18) 25x-95y=-4355
40x-y=2000
Answer: x=50 y=59
( 19) 54x+68y=3284
78x+y= 1404
Answer: x= 18 y=34.
(20) 70x+ 13y=3520
52x+y=2 132
Answer: x=4 1 y=50.
(2 1) 48x-54y=-3 186
24x+y= 1080
Answer: x=45 y=99
(22) 36x+77y=76 19
47x-y=799
Answer: x= 17 y=9 1.
(23) 13x-42y=-27 17
3 1x-y= 1333
Answer: x=43 y=78
(24) 28x+28y=3332
52x-y=4628
Answer: x=89 y=30
(25) 62x-98y=-2564
46x-y=2024
Answer: x=44 y=54.
(26) 79x-76y=-4388
26x-y=832
Answer: x=32 y=9 1.
(27) 63x-40y=-82 1
42x-y=546
Answer: x= 13 y=4 1.
(28) 69x-96y=- 1209
42x+y=3822
Answer: x=9 1 y=78.
(29) 85x+67y=7338
1 1x+y=308
Answer: x=28 y=74
(30) 78x+74y= 12928
14x+y= 12 18
Answer: x=87 y=83.
(3 1) 39x+42y=533 1
59x-y=584 1
Answer: x=99 y=35
(32)29x+ 18y = 19 16
58x+y=2320
Answer: x=40 y=42
(33) 40x+3 1y=6043
45x-y=3555
Answer: x=79 y=93
(34) 47x+50y=8598
45x+y=3780
Answer: x=84 y=93
(35) 45x-30y=- 1455
29x-y=725
Answer: x=25 y=86
(36) 1 1x-43y =- 136 1
47x+y=799
Answer: x= 17 y=36.
(37) 33x+59y=3254
94x+y= 1034
Answer: x= 1 1 y=49.
(38) 89x-74y=-2735
68x+y= 1020
Answer: x= 15 y=55.
(39) 94x+7 1y=75 17
78x+y=3822
Answer: x=49 y=4 1.
(40) 28x-62y=-4934
46x+y=552
Answer: x= 12 y=85.
(4 1) 75x+43y=8472
17x-y= 1394
Answer: x=82 y=54.
4 1x-38y =- 1 180
29x+y= 1450
Answer: x=50 y=85
(43) 22x-59y=824
63x+y=4725
Answer: x=75 y= 14.
(44) 95x-56y=-40 1
90x+y= 1530
Answer: x= 17 y=36.
(45) 93x-52y=-852
29x+y=464
Answer: x= 16 y=45.
(46) 93x+ 12y=8823
54x+y=49 14
Answer: x=9 1 y=30.
(47) 2 1x-63y=84
20x+y= 1880
Answer: x=94 y=30
(48) 48x+93y=9756
38x-y=950
Answer: x=25 y=92
(49) 99x-67y=40 1 1
75x-y=5475
Answer: x=73 y=48
(50) 83x+64y=929 1
90x-y=3690
Answer: x=4 1 y=92.
(5 1) 17x+62y = 32 16
75x-y=7350
Answer: x=98 y=25.
(52) 77x+67y=2739
14x-y=364
Answer: x=26 y= 1 1.
(53) 20x-68y=-4596
14x-y=924
Answer: x=66 y=87
(54) 23x+87y=4 1 10
83x-y=5727
Answer: x=69 y=29.
(55) 22x-38y=804
86x+y=6708
Answer: x=78 y=24.
(56) 20x-45y=-3520
56x+y=728
Answer: x= 13 y=84.
(57) 46x+37y=7085
6 1x-y=4636
Answer: x=76 y=97.
(58) 17x+6 1y=4088
7 1x+y=5609
Answer: x=79 y=45
(59)5 1x-6 1y =- 1907
89x-y=23 14
Answer: x=26 y=53
69x-98y=-2404
2 1x+y= 1386
Answer: x=66 y=7 1.
(6 1) 15x-4 1y = 754
74x-y=6956
Answer: x=94 y= 16.
(62) 78x-55y=656
89x+y=55 18
Answer: x=62 y=76
(63) 29x+2 1y= 1633
3 1x-y=7 13
Answer: x=23 y=46
(64) 58x-28y=2724
35x+y=3080
Answer: x=88 y=85.
(65) 28x-63y=-2254
88x-y=2024
Answer: x=23 y=46
(66) 43x+50y=7064
85x+y=8330
Answer: x=98 y=57.
(67) 58x-77y= 1 170
38x-y=2280
Answer: x=60 y=30.
(68) 92x+83y= 1 1586
43x+y=30 10
Answer: x=70 y=62
(69) 99x+82y=6055
52x-y= 17 16
Answer: x=33 y=34
(70) 15x+26y= 1729
94x+y=8554
Answer: x=9 1 y= 14.
(7 1) 64x+32y=3552
56x-y=2296
Answer: x=4 1 y=29.
(72) 94x+66y= 10524
84x-y=78 12
Answer: x=93 y=27
(73) 65x-79y=-58 15
89x+y=23 14
Answer: x=26 y=95
(74) 96x+54y=62 16
63x-y= 1953
Answer: x=3 1 y=60.
(75) 60x-44y=-352
33x-y= 1452
Answer: x=44 y=68
(76) 79x-45y=5 10
14x-y=840
Answer: x=60 y=94
(77) 29x-35y=-2 18
59x-y=4897
Answer: x=83 y=75
(78) 33x-24y= 1905
30x+y=2670
Answer: x=89 y=43
(79)6 1x+94y = 1 1800
93x+y=5952
Answer: x=64 y=84.
(80) 6 1x+90y=500 1
48x+y=2448
Answer: x=5 1 y=2 1.
(8 1) 93x- 19y=2
86x-y= 1548
Answer: x= 18 y=88.
(82) 19x-96y=-59 10
30x-y=2340
Answer: x=78 y=77.
(83) 80x+74y=8088
96x-y=8640
Answer: x=90 y= 12.
(84) 53x-94y= 1946
45x+y=26 10
Answer: x=58 y= 12.
(85)93x+ 12y = 9 1 17
28x-y=2492
Answer: x=89 y=70
(86) 66x-7 1y=- 1673
99x-y=782 1
Answer: x=79 y=97
(87) 43x-52y=- 1742
76x+y= 1976
Answer: x=26 y=55
(88) 70x+35y=8295
40x+y=2920
Answer: x=73 y=9 1.
(89) 43x+82y=4757
1 1x+y=23 1
Answer: x=2 1 y=47.
(90) 12x- 19y=236
95x-y=7885
Answer: x=83 y=40
(9 1)5 1x+99y = 803 1
7 1x-y=29 1 1
Answer: x=4 1 y=60.
(92) 37x+74y=4403
69x-y=6003
Answer: x=87 y= 16.
(93) 46x+34y=4820
7 1x-y=5 183
Answer: x=73 y=43
(94) 47x+98y=586 1
55x-y=4565
Answer: x=83 y=20
(95) 30x- 17y=239
28x+y= 1064
Answer: x=38 y=53
(96)55x- 12y = 4 1 12
79x-y=7268
Answer: x=92 y=79
(97) 27x-24y=-450
67x-y=3886
Answer: x=58 y=84.
(98) 97x+23y=8 1 19
14x+y=966
Answer: x=69 y=62
(99) 84x+53y= 1 1275
70x+y=6790
Answer: x=97 y=59.
( 100) 5 1x-97y=297
19x-y= 1520
Answer: x = 80y = 391) 66x+17y = 3967.
25x+y= 1200
Answer: x=48 y=47.
(2) 18x+23y=2303
74x-y= 1998
Answer: x=27 y=79
(3) 44x+90y=7796
44x+y=3476
Answer: x=79 y=48
⑷76x-66y = 4082
30x-y=2940
Answer: x=98 y=5 1.
(5) 67x+54y=8546
7 1x-y=5680
Answer: x=80 y=59
(6) 42x-95y=- 14 10
2 1x-y= 1575
Answer: x=75 y=48
(7) 47x-40y=853
34x-y=2006
Answer: x=59 y=48
(8) 19x-32y=- 1786
75x+y=4950
Answer: x=66 y=95
(9) 97x+24y=7202
58x-y=2900
Answer: x=50 y=98
( 10) 42x+85y=6362
63x-y= 1638
Answer: x=26 y=62
( 1 1)85x-92y =-25 18
27x-y=486
Answer: x= 18 y=44.
( 12) 79x+40y=24 19
56x-y= 1 176
Answer: x=2 1 y= 19.
( 13) 80x-87y=2 156
22x-y=880
Answer: x=40 y= 12.
( 14) 32x+62y=5 134
57x+y=2850
Answer: x=50 y=57
( 15) 83x-49y=82
59x+y=2 183
Answer: x=37 y=6 1.
( 16) 9 1x+70y=5845
95x-y=4275
Answer: x=45 y=25.
( 17) 29x+44y=528 1
88x-y=3608
Answer: x=4 1 y=93.
( 18) 25x-95y=-4355
40x-y=2000
Answer: x=50 y=59
( 19) 54x+68y=3284
78x+y= 1404
Answer: x= 18 y=34.
(20) 70x+ 13y=3520
52x+y=2 132
Answer: x=4 1 y=50.
(2 1) 48x-54y=-3 186
24x+y= 1080
Answer: x=45 y=99
(22) 36x+77y=76 19
47x-y=799
Answer: x= 17 y=9 1.
(23) 13x-42y=-27 17
3 1x-y= 1333
Answer: x=43 y=78
(24) 28x+28y=3332
52x-y=4628
Answer: x=89 y=30
(25) 62x-98y=-2564
46x-y=2024
Answer: x=44 y=54.
(26) 79x-76y=-4388
26x-y=832
Answer: x=32 y=9 1.
(27) 63x-40y=-82 1
42x-y=546
Answer: x= 13 y=4 1.
(28) 69x-96y=- 1209
42x+y=3822
Answer: x=9 1 y=78.
(29) 85x+67y=7338
1 1x+y=308
Answer: x=28 y=74
(30) 78x+74y= 12928
14x+y= 12 18
Answer: x=87 y=83.
(3 1) 39x+42y=533 1
59x-y=584 1
Answer: x=99 y=35
(32)29x+ 18y = 19 16
58x+y=2320
Answer: x=40 y=42
(33) 40x+3 1y=6043
45x-y=3555
Answer: x=79 y=93
(34) 47x+50y=8598
45x+y=3780
Answer: x=84 y=93
(35) 45x-30y=- 1455
29x-y=725
Answer: x=25 y=86
(36) 1 1x-43y =- 136 1
47x+y=799
Answer: x= 17 y=36.
(37) 33x+59y=3254
94x+y= 1034
Answer: x= 1 1 y=49.
(38) 89x-74y=-2735
68x+y= 1020
Answer: x= 15 y=55.
(39) 94x+7 1y=75 17
78x+y=3822
Answer: x=49 y=4 1.
(40) 28x-62y=-4934
46x+y=552
Answer: x= 12 y=85.
(4 1) 75x+43y=8472
17x-y= 1394
Answer: x=82 y=54.
4 1x-38y =- 1 180
29x+y= 1450
Answer: x=50 y=85
(43) 22x-59y=824
63x+y=4725
Answer: x=75 y= 14.
(44) 95x-56y=-40 1
90x+y= 1530
Answer: x= 17 y=36.
(45) 93x-52y=-852
29x+y=464
Answer: x= 16 y=45.
(46) 93x+ 12y=8823
54x+y=49 14
Answer: x=9 1 y=30.
(47) 2 1x-63y=84
20x+y= 1880
Answer: x=94 y=30
(48) 48x+93y=9756
38x-y=950
Answer: x=25 y=92
(49) 99x-67y=40 1 1
75x-y=5475
Answer: x=73 y=48
(50) 83x+64y=929 1
90x-y=3690
Answer: x=4 1 y=92.
(5 1) 17x+62y = 32 16
75x-y=7350
Answer: x=98 y=25.
(52) 77x+67y=2739
14x-y=364
Answer: x=26 y= 1 1.
(53) 20x-68y=-4596
14x-y=924
Answer: x=66 y=87
(54) 23x+87y=4 1 10
83x-y=5727
Answer: x=69 y=29.
(55) 22x-38y=804
86x+y=6708
Answer: x=78 y=24.
(56) 20x-45y=-3520
56x+y=728
Answer: x= 13 y=84.
(57) 46x+37y=7085
6 1x-y=4636
Answer: x=76 y=97.
(58) 17x+6 1y=4088
7 1x+y=5609
Answer: x=79 y=45
(59)5 1x-6 1y =- 1907
89x-y=23 14
Answer: x=26 y=53
69x-98y=-2404
2 1x+y= 1386
Answer: x=66 y=7 1.
(6 1) 15x-4 1y = 754
74x-y=6956
Answer: x=94 y= 16.
(62) 78x-55y=656
89x+y=55 18
Answer: x=62 y=76
(63) 29x+2 1y= 1633
3 1x-y=7 13
Answer: x=23 y=46
(64) 58x-28y=2724
35x+y=3080
Answer: x=88 y=85.
(65) 28x-63y=-2254
88x-y=2024
Answer: x=23 y=46
(66) 43x+50y=7064
85x+y=8330
Answer: x=98 y=57.
(67) 58x-77y= 1 170
38x-y=2280
Answer: x=60 y=30.
(68) 92x+83y= 1 1586
43x+y=30 10
Answer: x=70 y=62
(69) 99x+82y=6055
52x-y= 17 16
Answer: x=33 y=34
(70) 15x+26y= 1729
94x+y=8554
Answer: x=9 1 y= 14.
(7 1) 64x+32y=3552
56x-y=2296
Answer: x=4 1 y=29.
(72) 94x+66y= 10524
84x-y=78 12
Answer: x=93 y=27
(73) 65x-79y=-58 15
89x+y=23 14
Answer: x=26 y=95
(74) 96x+54y=62 16
63x-y= 1953
Answer: x=3 1 y=60.
(75) 60x-44y=-352
33x-y= 1452
Answer: x=44 y=68
(76) 79x-45y=5 10
14x-y=840
Answer: x=60 y=94
(77) 29x-35y=-2 18
59x-y=4897
Answer: x=83 y=75
(78) 33x-24y= 1905
30x+y=2670
Answer: x=89 y=43
(79)6 1x+94y = 1 1800
93x+y=5952
Answer: x=64 y=84.
(80) 6 1x+90y=500 1
48x+y=2448
Answer: x=5 1 y=2 1.
(8 1) 93x- 19y=2
86x-y= 1548
Answer: x= 18 y=88.
(82) 19x-96y=-59 10
30x-y=2340
Answer: x=78 y=77.
(83) 80x+74y=8088
96x-y=8640
Answer: x=90 y= 12.
(84) 53x-94y= 1946
45x+y=26 10
Answer: x=58 y= 12.
(85)93x+ 12y = 9 1 17
28x-y=2492
Answer: x=89 y=70
(86) 66x-7 1y=- 1673
99x-y=782 1
Answer: x=79 y=97
(87) 43x-52y=- 1742
76x+y= 1976
Answer: x=26 y=55
(88) 70x+35y=8295
40x+y=2920
Answer: x=73 y=9 1.
(89) 43x+82y=4757
1 1x+y=23 1
Answer: x=2 1 y=47.
(90) 12x- 19y=236
95x-y=7885
Answer: x=83 y=40
(9 1)5 1x+99y = 803 1
7 1x-y=29 1 1
Answer: x=4 1 y=60.
(92) 37x+74y=4403
69x-y=6003
Answer: x=87 y= 16.
(93) 46x+34y=4820
7 1x-y=5 183
Answer: x=73 y=43
(94) 47x+98y=586 1
55x-y=4565
Answer: x=83 y=20
(95) 30x- 17y=239
28x+y= 1064
Answer: x=38 y=53
(96)55x- 12y = 4 1 12
79x-y=7268
Answer: x=92 y=79
(97) 27x-24y=-450
67x-y=3886
Answer: x=58 y=84.
(98) 97x+23y=8 1 19
14x+y=966
Answer: x=69 y=62
(99) 84x+53y= 1 1275
70x+y=6790
Answer: x=97 y=59.
( 100) 5 1x-97y=297
19x-y= 1520
Answer: x=80 y=39