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8-(4*x) = (1/3)*(6*x-12) // - (1/3)*(6*x-12)
8-((1/3)*(6*x-12))-(4*x) = 0
(-1/3)*(6*x-12)-4*x+8 = 0
8-1/3*(6*x-12)-4*x = 0
8-1/3*(6*x-12)-4*x = 0
4-6*x+8 = 0
12-6*x = 0
12-6*x = 0
12-6*x = 0 // - 12
-6*x = -12 // : -6
x = -12/(-6)
x = 2
x = 2
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