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