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q in (-oo:+oo)
1-((25*q)/4) = (-3*q)/4-((1/2)*(5*q+2)) // - (-3*q)/4-((1/2)*(5*q+2))
(1/2)*(5*q+2)-((25*q)/4)-((-3*q)/4)+1 = 0
(1/2)*(5*q+2)+(-25/4)*q+(3/4)*q+1 = 0
1/2*(5*q+2)+(-25*q)/4+(3*q)/4+1 = 0
(1/2*4*(5*q+2))/4+(-25*q)/4+(3*q)/4+(1*4)/4 = 0
1/2*4*(5*q+2)-25*q+3*q+1*4 = 0
3*q-15*q+4+4 = 0
4-12*q+4 = 0
8-12*q = 0
(8-12*q)/4 = 0
(8-12*q)/4 = 0 // * 4
8-12*q = 0
8-12*q = 0 // - 8
-12*q = -8 // : -12
q = -8/(-12)
q = 2/3
q = 2/3
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