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x in (-oo:+oo)
(3/4)*x-(1/2) = (9/8)*x+3/2 // - (9/8)*x+3/2
(3/4)*x-((9/8)*x)-(1/2)-(3/2) = 0
(3/4)*x+(-9/8)*x-1/2-3/2 = 0
-3/8*x-2 = 0 // + 2
-3/8*x = 2 // : -3/8
x = 2/(-3/8)
x = -16/3
x = -16/3
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