18=3d-3

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Solution for 18=3d-3 equation: 



18=3d-3

We move all terms to the left:

18-(3d-3)=0

We get rid of parentheses

-3d+3+18=0

We add all the numbers together, and all the variables

-3d+21=0

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

-3d=-21

d=-21/-3

d=+7

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