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d in (-oo:+oo)
(1/3)*(d-8)-((7/2)*(5*d-3)) = 7/12 // - 7/12
(1/3)*(d-8)-((7/2)*(5*d-3))-(7/12) = 0
(1/3)*(d-8)+(-7/2)*(5*d-3)-7/12 = 0
1/3*(d-8)-7/2*(5*d-3)-7/12 = 0
(1/3*12*(d-8))/12+(-7/2*12*(5*d-3))/12-7/12 = 0
1/3*12*(d-8)-7/2*12*(5*d-3)-7 = 0
94-206*d-7 = 0
87-206*d = 0
(87-206*d)/12 = 0
(87-206*d)/12 = 0 // * 12
87-206*d = 0
87-206*d = 0 // - 87
-206*d = -87 // : -206
d = -87/(-206)
d = 87/206
d = 87/206
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