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(3/8)*x+5/8 = 4*x // - 4*x
(3/8)*x-(4*x)+5/8 = 0
(3/8)*x-4*x+5/8 = 0
5/8-29/8*x = 0 // - 5/8
-29/8*x = -5/8 // : -29/8
x = -5/8/(-29/8)
x = 5/29
x = 5/29
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