21=-5(d-3)-14

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Solution for 21=-5(d-3)-14 equation: 



21=-5(d-3)-14

We move all terms to the left:

21-(-5(d-3)-14)=0



We calculate terms in parentheses: -(-5(d-3)-14), so:

-5(d-3)-14

We multiply parentheses

-5d+15-14

We add all the numbers together, and all the variables

-5d+1

Back to the equation:

-(-5d+1)



We get rid of parentheses

5d-1+21=0

We add all the numbers together, and all the variables

5d+20=0

We move all terms containing d to the left, all other terms to the right

5d=-20

d=-20/5

d=-4

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