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