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=80 y=39

If you give me the answer, you won't find me. Ok, remember to ask me about my mobile phone. It's score calculation, depending on the topic. But thank you. If you change a little, I will choose you. Two boats left from both sides of the river at the same time. Their speed is fixed. They met for the first time at a distance of 700 meters from a river bank, then moved on and returned immediately after reaching another river bank. The second time they met 400 meters away from the other side and asked about the river. (The time for the ship to turn around after landing is not counted.

Let the river width be x, and the two ships are ship A and ship B respectively.

Available:

Suppose A opens 700 for the first time, then B opens X-700 at the same time.

So the driving distance of the second A is X-700+400=X-300.

The driving distance of B is 700+X-400=X+300.

Let the speed of A be A and the speed of B be B, and you can get

700/a==(X-700)/b

(X-300)/a=(X+300)/b

The solution is X= 1700.

That is, the river width is1700m.

Or:

Because the speed is constant, the sum of the distances traveled by the two ships when they first met is 1 times the width of the river. When they met for the second time, the sum of the distances traveled by the two ships was three times the width of the river. When the boat from the shore first met, it traveled 700 meters. So when the ship from one shore met for the second time, it traveled 3×700=2 100 meters, so it was a river.

X+400=2 100

Solution: X= 1700

A: River width 1700 meters.

Is this ok? I have taken out all my study materials.

I'll give you some exercises. See if you can work it out. I like you.

What is the value of k? Does the fractional equation 6/x-1= x+k/x (x-1)-3/x have a solution?

2. If the equation 1/x- 1=2/x-a has a positive integer solution, find the value of a. ..

3. The distance between Party A and Party B is 48km, and the time for the ship to travel from Party A to Party B is equal to half the time for the ship to travel in the opposite direction. Given the current speed of 4 km/h, find the ship speed in still water.

4.{x^2-y^2/xy}^2÷(x=y)*{x/x-y}^3

5.3 inches x/x-2 inches (x+2-5 inches x-2 inches)

1. Regarding the fractional equation of X,1(x-2)+k/(x+2) = 4/(x 2-4) has an augmented root, and x=-2, so find k.

2. Equation x+ 1/x=c+ 1/c The solution of X is x 1=c, x2= 1/c, if the solution of x-3/x=c-3/c is X1.