Answer:
x = 6
Step-by-step explanation:
Step 1: Write equation
150 - x - 2x = 120 + 2x
Step 2: Solve for x
Step 3: Check
Plug in x to verify it's a solution.
150 - 6 - 2(6) = 120 + 2(6)
144 - 12 = 120 + 12
132 = 132