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(3/4)*x+7/8 = 43/8 // - 43/8
(3/4)*x+7/8-(43/8) = 0
(3/4)*x+7/8-43/8 = 0
3/4*x-9/2 = 0 // + 9/2
3/4*x = 9/2 // : 3/4
x = 9/2/3/4
x = 6
x = 6
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