Question

3(2x + 3) + 4x + 2 = 21
Solve for x

Answer 1

`x = 1`

Explanation:

1) Expand.

`6x + 9 + 4x + 2 = 21`

2) Simplify 6x + 9 + 4x + 2 to 10x + 11.

`10x + 10 = 21`

3) Subtract 11 from both sides.

`10x = 21 - 11`

4) Simplify 21 - 11 to 10.

`10x = 10`

5) Divide both sides by 10.

`x = 1`

Therefor, the answer is x = 1.

Answer 2

3(2x+3)+4x+2=21
6x+9+4x+2=21
6x+4x+9+2=21
10x+11=21
10x=21-11
10x=10
x=1