-18=-(6d+6)

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Solution for -18=-(6d+6) equation: 



-18=-(6d+6)

We move all terms to the left:

-18-(-(6d+6))=0



We calculate terms in parentheses: -(-(6d+6)), so:

-(6d+6)

We get rid of parentheses

-6d-6

Back to the equation:

-(-6d-6)



We get rid of parentheses

6d+6-18=0

We add all the numbers together, and all the variables

6d-12=0

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

6d=12

d=12/6

d=2

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