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(3*x)/8 = 5/2 // - 5/2
(3*x)/8-(5/2) = 0
(3*x)/8-5/2 = 0
3/8*x-5/2 = 0 // + 5/2
3/8*x = 5/2 // : 3/8
x = 5/2/3/8
x = 20/3
x = 20/3
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