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