Answer:
x = 12
Step-by-step explanation:
3( x - 6) = 2x - x + 12 - 6; distribute the 3 to the parenthesis
3x - 18 = 2x - x + 12 - 6; now combine like terms such as x's and numbers
3x - 18 = x + 6; subtract x from both sides
2x - 18 = 6; add 18 to both sides
2x = 24; divide by 2
x = 12