Question

A, 3x-7=2x+5. b, 7x+8=4x-10 c, 4x-15=-2x+3. d, 2x-4-8=4x e, 3x=x+1+7. f, 360+36x=30x

Answer 1

A)

3x - 7 = 2x + 5
3x - 2x = 5 + 7
x = 12

B)

7x + 8 = 4x - 10
7x - 4x = - 10 - 8
3x = - 18
x = - 18 / 3
x = - 6

C)

4x - 15 = - 2x + 3
4x + 2x = 3 + 15
6x = 18
x = 18 / 6
x = 3

D)

2x - 4 - 8 = 4x
2x - 4x = 8 + 4
- 2x = 12
x = 12 / - 2
x = - 6

E)

3x = x + 1 + 7
3x - x = 1 + 7
2x = 8

F)

360 + 36x = 30x
36x - 30x = - 360
6x = - 360
x = - 360 / 6
x = - 60

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