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