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(1/2)*x-3 = 13/35-((3/4)*x) // - 13/35-((3/4)*x)
(1/2)*x+(3/4)*x-(13/35)-3 = 0
(1/2)*x+(3/4)*x-13/35-3 = 0
5/4*x-118/35 = 0 // + 118/35
5/4*x = 118/35 // : 5/4
x = 118/35/5/4
x = 472/175
x = 472/175
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