15=-3(x+9)

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Solution for 15=-3(x+9) equation: 



15=-3(x+9)

We move all terms to the left:

15-(-3(x+9))=0



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

-3(x+9)

We multiply parentheses

-3x-27

Back to the equation:

-(-3x-27)



We get rid of parentheses

3x+27+15=0

We add all the numbers together, and all the variables

3x+42=0

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

3x=-42

x=-42/3

x=-14

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