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x in (-oo:+oo)
4/11 = (5/2)*x // - (5/2)*x
4/11-((5/2)*x) = 0
(-5/2)*x+4/11 = 0
4/11-5/2*x = 0 // - 4/11
-5/2*x = -4/11 // : -5/2
x = -4/11/(-5/2)
x = 8/55
x = 8/55
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