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x in (-oo:+oo)
x-(3*x)-(1/4)-(5/2) = x // - x
x-(3*x)-x-(1/4)-(5/2) = 0
x-3*x-x-1/4-5/2 = 0
-3*x-11/4 = 0 // + 11/4
-3*x = 11/4 // : -3
x = 11/4/(-3)
x = -11/12
x = -11/12
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