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x in (-oo:+oo)
x-((2/3)*x)-((5/2)*x) = 1/4 // - 1/4
x-((2/3)*x)-((5/2)*x)-(1/4) = 0
x+(-2/3)*x+(-5/2)*x-1/4 = 0
-13/6*x-1/4 = 0 // + 1/4
-13/6*x = 1/4 // : -13/6
x = 1/4/(-13/6)
x = -3/26
x = -3/26
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