2:6X+5= 1 1

3:X-0.8X=6

4: 19y+y=40

5:25-5x= 15

6:79y+y=80

7:42x+28x= 140

8:3x- 1=8

9: 90y-90=90

10: 80y-90=70

1 1:78y+2y = 160

12: 88-x=80

13: 9-4x= 1

14: 20x=40

15: 65y-30= 100

16: 5 1y-y= 100

17: 6X-3X= 18

18: 1.5x+ 18 = 3x

19: 5×3-x÷2=8

20: 0.273÷x=0.35

2 1: 1.8x=0.972

22: x÷0.756=90

23: 9x-40=5

24: x÷5+9=2 1

25: 48-27+5x=3 1

26: 10.5+x+2 1=56

27: x+2x+ 18=78

28: (200-x)÷5=30

29: (x- 140)÷70=4

30: 0. 1(x+6)=3.3×0.4

3 1: 4(x-5.6)= 1.6

32: 7(6.5+x)=87.5

33: (27.5-3.5)÷x=4

34: 3X+5X=48

35: 14X-8X= 12

36: 6x5+2X=44

37: 20X-50=50

38: 28+6X=88

39: 32-22X= 10

40: 24-3X=3

4 1: 10X(5+ 1)= 60

42: 99X= 100-X

43: X+3= 18

44: X-6= 12

45: 56-2X=20

46: 4y+2=6

47: x+32=76

48: 3x+6= 18

49: 16+8x=40

50: 2x-8=8

5 1: 4x-3*9=29

52: 8x-3x= 105

53: x-6*5=42

54: x+5=7

55: 2x+3= 10

56: 12x-9x=9

57: 6x+ 18=48

58: 56x-50x=30

59: 5x= 15

60: 78-5x=28

6 1: 32y-29=3

62: 5x+5= 15

63: 89x-9=80

64: 100-20x=20

65: 55x-25x=60

66: 76y-75= 1

67: 23y-23=23

68: 4x-20=0

69: 80y+20= 100

70: 17:85y+ 1=-86

7 1: 18:45x-50=40

72: 5x= 15

73: 78-5x=28

74: 32y-29=3

75: 5x+5= 15

76: 89x-9=80