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d in (-oo:+oo)
(1/3)*(d-8)-((7/2)*(5*d-3)) = 7/6 // - 7/6
(1/3)*(d-8)-((7/2)*(5*d-3))-(7/6) = 0
(1/3)*(d-8)+(-7/2)*(5*d-3)-7/6 = 0
1/3*(d-8)-7/2*(5*d-3)-7/6 = 0
(1/3*6*(d-8))/6+(-7/2*6*(5*d-3))/6-7/6 = 0
1/3*6*(d-8)-7/2*6*(5*d-3)-7 = 0
47-103*d-7 = 0
40-103*d = 0
(40-103*d)/6 = 0
(40-103*d)/6 = 0 // * 6
40-103*d = 0
40-103*d = 0 // - 40
-103*d = -40 // : -103
d = -40/(-103)
d = 40/103
d = 40/103
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