Answer:
x = - 4
Step-by-step explanation:
7 - 3(5x + 2) = 3(7 - 3x) + 4 ← distribute parenthesis on both sides and simplify
7 - 15x - 6 = 21 - 9x + 4
- 15x + 1 = - 9x + 25 ( add 9x to both sides )
- 6x + 1 = 25 ( subtract 1 from both sides )
- 6x = 24 ( divide both sides by - 6 )
x = - 4
