3x-64= 1 1
12+8x=52
0.8x-4.2=2.2
2x+5= 10
3x- 15=75
4x+4o=320
3x+77= 122
5x- 1.6=0.6
6x-4=20
10x-0.6=2.4
500- 12x= 140
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.
3X+ 18=52 x=34/3
4Y+ 1 1 = 22y = 1 1/4
3X 9 = 5 x = 5/27
8Z/6=48 z=36
3X+7=59 x=52/3
4Y-69=8 1 y=75/4
8X*6=5 x=5/48
7Z/9=4 y=63/7
15X+8-5X=54 x=4.6
5Y*5=27 y=27/40
8x+2= 10 x= 1
x*8=88 x= 1 1
y-90= 1 y=9 1
2x-98=2 x=50
6x*6= 12 x= 1/3
5-6=5x x=- 1/5
6*x=42 x=7
55-y=33 y=22
1 1 * 3x = 60x = 20/ 1 1
8-y=2 y=-6
1.x+2=3
2.x+32=33
3.x+6= 18
4.4+x=47
5. 19-x=8
6.98-x= 13
7.66-x= 10
8.5x= 10
9.3 times =27
10.7x=7
1 1.8x=8
12.9x=9
13. 10x= 100
14.66x=660
15.7x=49
16.2x=4
17.3x=9
18.4x= 16
19.5x=25
20.6 times =36
2 1.8x=64
22.9x=8 1
23. 10x= 100
24. 1 1x = 12 1
25. 12x= 144
26. 13x= 169
27. 14x= 196
28. 15x=225
29. 16x=256
30. 17x=289
3 1. 18x=324
32. 19x=36 1
33.20x=400
3 1.2 1x=44 1
32.22x=484
33. 1 1 1x = 1232 1
34. 1 1 1 1x = 123432 1
35. 1 1 1 1 1x = 12345432 1
36. 1 1 1 1 1 1x = 1234565432 1
37.46/x=23
38.64/x=8
39.99/x= 1 1
40. 1235467564x=0
4 1.2x+ 1= -2+x
42.4x-3(20 times) =3
43..-2(x- 1)=4
44.3X+ 189=52 1
45.4Y+ 1 19=22 5
46.3X+77=59
47.4Y-6985=8 1
48.X=0. 1
49.5 times =55.5
50.Y=50-85
(-8)-(- 1) =-7
45+(-30) = 15
- 1.5-(- 1 1.5) = 10
-0.25-(-0.5) =0.25
15- 1-(-20-4) =- 10
-40-28-(- 19)+(-24) =-73
22.54+(-4.4)+(- 12.54)+4.4 = 10
(2/3{ only two "/"are fractional lines}-1/2)-(1/3-5/6) = 2/3.
2.4-(-3/5)+(-3. 1)+4/5 =0.7
(-6/ 13)+(-7/ 13)-(-2) = 1
3/4-(- 1 1/6)+(-7/3) = 1/4
1 1+(-22)-3×(- 1 1) =22
(-0. 1)÷0.5×(- 100) =20
The cubic of (-2) -9 =- 17
23÷[-9-(-4)] =-23/5
(3/4-7/8)÷(-7/8) = 1/7
(-60)×(3/4+5/6)=-95
[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
5+2 1*8/2-6-59
68/2 1-8- 1 1*8+6 1
-2/9-7/9-56
4.6-(-3/4+ 1.6-4-3/4)
1/2+3+5/6-7/ 12
[2/3-4- 1/4*(-0.4)]/ 1/3+2
22+(-4)+(-2)+4*3
-2*8-8* 1/2+8/ 1/8
(2/3+ 1/2)/(- 1/ 12)*(- 12)
(-28)/(-6+4)+(- 1)
2/(-2)+0/7-(-8)*(-2)
( 1/4-5/6+ 1/3+2/3)/ 1/2
18-6/(-3)*(-2)
(5+3/8*8/30/(-2)-3
(-84)/2*(-3)/(-6)
1/2*(-4/ 15)/2/3
- 1+2-3+4-5+6-7
-50-28+(-24)-(-22)
- 19.8-(-20.3)-(+20.2)- 10.8
0.25- +(- 1 )-(+3 )
- 1-〔 1-( 1-0.6÷3)〕×〔2-(-3)×(-4)〕
0÷(-4)-42-(-8)÷(- 1)3
-32-(-3) 2-(-3)3+(- 1)6
3×(-2)2+(-2×3)2+(-2+3)2
(- 12)÷4×(-6)÷2
(- 12)÷4×(-6)×2
75÷〔 138÷( 100-54)〕
85×(95- 1440÷24)
80400-(4300+870÷ 15)
240×78÷( 154- 1 15)
1437×27+27×563
〔75-( 12+ 18)〕÷ 15
2 160÷〔(83-79)× 18〕
280+840÷24×5
325÷ 13×(266-250)
85×(95- 1440÷24)
58870÷( 105+20×2)
1437×27+27×563
8 1432÷( 13×52+78)
[37.85-(7.85+6.4)] ×30
156×[( 17.7-7.2)÷3]
(947-599)+76×64
36×(9 13-276÷23)
-(3.4 1.25×2.4)
0.8×〔 15.5-(3.2 1 5.79)〕
(3 1.8 3.2×4)÷5
194-64.8÷ 1.8×0.9 36.72÷4.25×9.9
3.4 16÷(0.0 16×35)
0.8×[( 10-6.76)÷ 1.2]
( 136+64)×(65-345÷23)
(6.8-6.8×0.55)÷8.5
0. 12× 4.8÷0. 12×4.8
(58+37)÷(64-9×5)
8 12-700÷(9+3 1× 1 1)
(3.2× 1.5+2.5)÷ 1.6
85+ 14×( 14+208÷26)
120-36×4÷ 18+35
(284+ 16)×(5 12-8208÷ 18)
9.72× 1.6- 18.305÷7
4/7÷[ 1/3×(3/5-3/ 10)]
(4/5+ 1/4)÷7/3+7/ 10
12.78-0÷( 13.4+ 156.6 )
37.8 12-700÷(9+3 1× 1 1)
( 136+64)×(65-345÷23)
3.2×( 1.5+2.5)÷ 1.6
85+ 14×( 14+208÷26)
(58+37)÷(64-9×5)
(6.8-6.8×0.55)÷8.5
(284+ 16)×(5 12-8208÷ 18)
0. 12× 4.8÷0. 12×4.8
(3.2× 1.5+2.5)÷ 1.6
120-36×4÷ 18+35
10. 15- 10.75×0.4-5.7
5.8×(3.87-0. 13)
+4.2×3.74 347+45×2-4 160÷52
32.52-(6+9.728÷3.2)×2.5 87(58+37)÷(64-9×5)
[(7. 1-5.6)×0.9- 1. 15] ÷2.5 (3.2× 1.5+2.5)÷ 1.6
5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷( 12-7.2)-6
3.2×6+( 1.5+2.5)÷ 1.6 (3.2× 1.5+2.5)÷ 1.6
5.8×(3.87-0. 13)+4.2×3.74
33.02-( 148.4-90.85)÷2.5
————————————— (The above calculation problems are killing me, and some of them are written by myself).
1. Calculation problem: (10 ′× 5 = 50 ′)
( 1)3.28-4.76+ 1 - ;
(2)2.75-2 -3 + 1 ;
(3)42÷(- 1 )- 1 ÷(-0. 125);
(4)(-48) ÷82-(-25) ÷(-6)2;
(5)- +( )×(-2.4).
2. Calculation problem: (10 ′× 5 = 50 ′)
( 1)-23÷ 1 ×(- 1 )2÷( 1 )2;
(2)- 14-(2-0.5)× ×[( )2-( )3];
(3)- 1 ×[ 1-3×(- )2]-( )2×(-2)3÷(- )3
(4)(0. 12+0.32) ÷ [-22+(-3)2-3 × ];
(5)-6.24×32+3 1.2×(-2)3+(-0.5 1) ×624.
Quality optimization training
1. Fill in the blanks:
(1) If yes, then AC 0；; ; If so, then AC 0；;
(2) If yes, then ABC =；; -a2b2c 2 =；
(3) Given that A and B are reciprocal, C and D are reciprocal, and the absolute value of X is equal to 2, then x2-(a+b)+cdx=.
2. Calculation:
( 1)-32-
(2){ 1+[ ]×(-2)4}÷(- );
(3)5-3×{-2+4×[-3×(-2)2-(-4) ÷(- 1)3]-7}.
Practical application of life
A bought a stock with 1 0,000 yuan, and then he resold the stock to B, earning 10%, and then B resold the stock to A, but B lost 10%. Finally, A sells the stock to B at 10% of the price that B sells to A.. In the above stock trading, ()
A.a just breaks even; B. profit 1 yuan;
C.A. Profit from 9 yuan; D. Loss of Party A 1. 1 yuan.
Reference answer:
Synchronous outline exercise
1.( 1)-0.73 (2)- 1 ; (3)- 14; (4)- ; (5)-2.9
2.( 1)-3 (2)- 1 ; (3)- ; (4) 1; (5)-624.
Quality optimization training
1.( 1)>，& gt； (2)24,-576; (3)2 or 6. [Hint: ∫= 2 ∴x2=4, x = 2]. ( 1)-3 1; (2)-8 (3)224
Practical application of life b
——————————— (The above exercises)
It's already done for you. Can I have a look? I tried my best.