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