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(9/4)*x-(5/2) = (3/2)*x // - (3/2)*x
(9/4)*x-((3/2)*x)-(5/2) = 0
(9/4)*x+(-3/2)*x-5/2 = 0
3/4*x-5/2 = 0 // + 5/2
3/4*x = 5/2 // : 3/4
x = 5/2/3/4
x = 10/3
x = 10/3
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