3(8-5d)=-21

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Solution for 3(8-5d)=-21 equation: 


d in (-oo:+oo)

3*(8-(5*d)) = -21 // + 21

3*(8-(5*d))+21 = 0

3*(8-5*d)+21 = 0

3*(8-5*d)+21 = 0

45-15*d = 0

45-15*d = 0

45-15*d = 0 // - 45

-15*d = -45 // : -15

d = -45/(-15)

d = 3

d = 3

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