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