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(7/8)*x+(1/4)*x-2 = (7/32)*x+1/8 // - (7/32)*x+1/8
(7/8)*x+(1/4)*x-((7/32)*x)-(1/8)-2 = 0
(7/8)*x+(1/4)*x+(-7/32)*x-1/8-2 = 0
29/32*x-17/8 = 0 // + 17/8
29/32*x = 17/8 // : 29/32
x = 17/8/29/32
x = 68/29
x = 68/29
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