-21=d/3

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Solution for -21=d/3 equation: 



-21=d/3

We move all terms to the left:

-21-(d/3)=0

We add all the numbers together, and all the variables

-(+d/3)-21=0

We get rid of parentheses

-d/3-21=0

We multiply all the terms by the denominator


-d-21*3=0

We add all the numbers together, and all the variables

-1d-63=0

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

-d=63

d=63/-1

d=-63

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