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(9/4)*x-((3/2)*x) = 3/8 // - 3/8
(9/4)*x-((3/2)*x)-(3/8) = 0
(9/4)*x+(-3/2)*x-3/8 = 0
3/4*x-3/8 = 0 // + 3/8
3/4*x = 3/8 // : 3/4
x = 3/8/3/4
x = 1/2
x = 1/2
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