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