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(1/3)*(6*x+12) = 4*(x-2) // - 4*(x-2)
(1/3)*(6*x+12)-(4*(x-2)) = 0
(1/3)*(6*x+12)-4*(x-2) = 0
1/3*(6*x+12)-4*(x-2) = 0
1/3*(6*x+12)-4*(x-2) = 0
12-2*x = 0
12-2*x = 0
12-2*x = 0 // - 12
-2*x = -12 // : -2
x = -12/(-2)
x = 6
x = 6
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