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q in (-oo:+oo)
-11/2 = 2*(3/4-q)-5*q // - 2*(3/4-q)-5*q
-(2*(3/4-q))-(-5*q)-11/2 = 0
5*q-2*(3/4-q)-11/2 = 0
(-2*2*(3/4-q))/2+(2*5*q)/2-11/2 = 0
2*5*q-2*2*(3/4-q)-11 = 0
14*q-11-3 = 0
14*q-14 = 0
(14*q-14)/2 = 0
(14*q-14)/2 = 0 // * 2
14*q-14 = 0
14*q-14 = 0 // + 14
14*q = 14 // : 14
q = 14/14
q = 1
q = 1
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