-9=-(d-4)

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Solution for -9=-(d-4) equation: 



-9=-(d-4)

We move all terms to the left:

-9-(-(d-4))=0



We calculate terms in parentheses: -(-(d-4)), so:

-(d-4)

We get rid of parentheses

-d+4

We add all the numbers together, and all the variables

-1d+4

Back to the equation:

-(-1d+4)



We get rid of parentheses

1d-4-9=0

We add all the numbers together, and all the variables

d-13=0

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

d=13

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