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5*x+7 = (1/6)*x+85/8 // - (1/6)*x+85/8
5*x-((1/6)*x)-(85/8)+7 = 0
5*x+(-1/6)*x-85/8+7 = 0
29/6*x-29/8 = 0 // + 29/8
29/6*x = 29/8 // : 29/6
x = 29/8/29/6
x = 3/4
x = 3/4
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