Answer:
x = -1
Explanation:
7x + 5(3 - 2x) = 18
Distribute 5 into (3 - 2x)
7x + 5 X 3 - 5 X 2x = 18
7x + 15 - 10x = 18
7x - 10x + 15 = 18
-3x + 15 = 18
Subtract 15 from both sides to eliminate 15 on the left
-3x + 15 - 15 = 18 - 15
-3x = 3
Divide both sides by by -3 to isolate x
-3x/-3 = 3/-3
x = -1