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a in (-oo:+oo)
-((17*a)/2)-7/4 = (-3/4)*(2*a-3) // - (-3/4)*(2*a-3)
-((-3/4)*(2*a-3))-((17*a)/2)-7/4 = 0
(3/4)*(2*a-3)+(-17/2)*a-7/4 = 0
3/4*(2*a-3)+(-17*a)/2-7/4 = 0
(3/4*2*4*(2*a-3))/(2*4)+(-17*4*a)/(2*4)+(-7*2)/(2*4) = 0
3/4*2*4*(2*a-3)-17*4*a-7*2 = 0
-56*a-18-14 = 0
-56*a-32 = 0
(-56*a-32)/(2*4) = 0
(-56*a-32)/(2*4) = 0 // * 2*4
-56*a-32 = 0
-56*a-32 = 0 // + 32
-56*a = 32 // : -56
a = 32/(-56)
a = -4/7
a = -4/7
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