Question

- 2x - 147 = 123 + 7x

Answer 1

x = -30

Explanation:

`-2x-147=123+7x\qquad\text{add 147 to both sides}\\\\-2x-147+147=123+147+7x\\\\-2x=270+7x\qquad\text{subtract }\ 7x\ \text{from both sides}\\\\-2x-7x=270+7x-7x\\\\-9x=270\qquad\text{divide both sides by (-9)}\\\\(-9x)/(-9)=(270)/(-9)\\\\x=-30`

Answer 2

-2x - 147 = 123 + 7x
Add 147 on both sides
-2x = 270 + 7x
Subtract 7x on both sides
-9x = 270
Divide -9x on both sides
X = -30