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(7/8)*x-(9/4) = 5/12-((1/8)*x) // - 5/12-((1/8)*x)
(7/8)*x+(1/8)*x-(9/4)-(5/12) = 0
(7/8)*x+(1/8)*x-9/4-5/12 = 0
x-8/3 = 0 // + 8/3
x = 8/3
x = 8/3
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