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3*((9/16)*x-1)+2*x = 86 // - 86
3*((9/16)*x-1)+2*x-86 = 0
3*(9/16*x-1)+2*x-86 = 0
3*(9/16*x-1)+2*x-86 = 0
59/16*x-86-3 = 0
59/16*x-89 = 0
59/16*x-89 = 0
59/16*x-89 = 0 // + 89
59/16*x = 89 // : 59/16
x = 89/59/16
x = 1424/59
x = 1424/59
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