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(5/4)*x-3 = 3/8 // - 3/8
(5/4)*x-(3/8)-3 = 0
(5/4)*x-3/8-3 = 0
5/4*x-27/8 = 0 // + 27/8
5/4*x = 27/8 // : 5/4
x = 27/8/5/4
x = 27/10
x = 27/10
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