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