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(1/2)*x-((3/4)*x) = (3/2)*x-(5/2) // - (3/2)*x-(5/2)
(1/2)*x-((3/4)*x)-((3/2)*x)+5/2 = 0
(1/2)*x+(-3/4)*x+(-3/2)*x+5/2 = 0
5/2-7/4*x = 0 // - 5/2
-7/4*x = -5/2 // : -7/4
x = -5/2/(-7/4)
x = 10/7
x = 10/7
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