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5/8 = (3*x)/4 // - (3*x)/4
5/8-((3*x)/4) = 0
(-3/4)*x+5/8 = 0
5/8-3/4*x = 0 // - 5/8
-3/4*x = -5/8 // : -3/4
x = -5/8/(-3/4)
x = 5/6
x = 5/6
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