Question

`38+7·(x-3)=9·(x+1)`

Answer 1

38 + 7x - 21 = 9x + 9

7x + 17 = 9x + 9

Subtract both sides 9

7x + 17 - 9 = 9x + 9 - 9

7x + 8 = 9x

Subtract sides 7x

7x - 7x + 8 = 9x - 7x

8 = 2x

Divide both sides by 2

8 ÷ 2 = 2x ÷ 2

x = 4

Answer 2

`38 + 7x - 21 = 9x + 9`

Combine like terms.

`17 + 7x = 9x + 9`

Eliminate a x.

`17 = 2x + 9`

`8 = 2x`

`x = 4`