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3*x-(10/4) = 56 // - 56
3*x-(10/4)-56 = 0
3*x-5/2-56 = 0
3*x-117/2 = 0 // + 117/2
3*x = 117/2 // : 3
x = 117/2/3
x = 39/2
x = 39/2
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