Question

A) -3-2x=9+4x

B) 4x+3=+x+15

C) 8x-30=3x+10

D) 3x-40=x-42

E) 2-6x=-3x+12-5x

Answer 1

A)

-3-2x=9+4x

- 3 - 2x - 4x = 9

- 3 - 6x = 9

- 6x = 9 + 3

- 6x = 12

x = 12/-6

x = - 12/6

x = - 2

B)

4x+3=+x+15

4x + 3 - x = 15

4x - x = 15 - 3

3x = 12

x = 12/3

x = 4

C)

8x-30=3x+10

8x - 30 - 3x = 10

8x - 3x = 10 + 30

5x = 40

x = 40/5

x = 8

D)

3x-40=x-42

3x - 40 - x = - 42

3x - x = - 42 + 40

2x = - 2

x = - 2/2

x = - 1

E)

2-6x=-3x+12-5x

2 - 6x = - 3x - 5x + 12

2 - 6x = - 8x + 12

2 - 6x + 8x = 12

2 + 2x = 12

2x = 12 - 2

2x = 10

x = 10/2

x = 5