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(2/5)*x-(1/4) = 3/2 // - 3/2
(2/5)*x-(1/4)-(3/2) = 0
(2/5)*x-1/4-3/2 = 0
2/5*x-7/4 = 0 // + 7/4
2/5*x = 7/4 // : 2/5
x = 7/4/2/5
x = 35/8
x = 35/8
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