21/20=-5/6d+1/3d+4/5

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Solution for 21/20=-5/6d+1/3d+4/5 equation: 


d in (-oo:+oo)

21/20 = (-5/6)*d+(1/3)*d+4/5 // - (-5/6)*d+(1/3)*d+4/5

21/20-((-5/6)*d)-((1/3)*d)-(4/5) = 0

(5/6)*d+(-1/3)*d+21/20-4/5 = 0

1/2*d+1/4 = 0 // - 1/4

1/2*d = -1/4 // : 1/2

d = -1/4/1/2

d = -1/2

d = -1/2

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