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x in (-oo:+oo)
-11/36 = (-7/2)*x // - (-7/2)*x
-((-7/2)*x)-11/36 = 0
(7/2)*x-11/36 = 0
7/2*x-11/36 = 0 // + 11/36
7/2*x = 11/36 // : 7/2
x = 11/36/7/2
x = 11/126
x = 11/126
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