2x - 2 - (x - 1) = 4 + x - 1(-3x)...first we distribute thru the parenthesis
2x - 2 - x + 1 = 4 + x + 3x...now we combine like terms on each side
x - 1 = 4 + 4x ....subtract x from each side
-1 = 4 + 4x - x ...subtract 4 from both sides
-1 - 4 = 4x - x...simplify
-5 = 3x...divide both sides by 3
-5/3 = x <==
