15=-3(9+p)

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



15=-3(9+p)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

-3(p+9)

We multiply parentheses

-3p-27

Back to the equation:

-(-3p-27)



We get rid of parentheses

3p+27+15=0

We add all the numbers together, and all the variables

3p+42=0

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

3p=-42

p=-42/3

p=-14

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