15=3(d-9)

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Solution for 15=3(d-9) equation: 



15=3(d-9)

We move all terms to the left:

15-(3(d-9))=0



We calculate terms in parentheses: -(3(d-9)), so:

3(d-9)

We multiply parentheses

3d-27

Back to the equation:

-(3d-27)



We get rid of parentheses

-3d+27+15=0

We add all the numbers together, and all the variables

-3d+42=0

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

-3d=-42

d=-42/-3

d=+14

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