-15=-3(10+p)

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Solution for -15=-3(10+p) equation: 



-15=-3(10+p)

We move all terms to the left:

-15-(-3(10+p))=0

We add all the numbers together, and all the variables

-(-3(p+10))-15=0



We calculate terms in parentheses: -(-3(p+10)), so:

-3(p+10)

We multiply parentheses

-3p-30

Back to the equation:

-(-3p-30)



We get rid of parentheses

3p+30-15=0

We add all the numbers together, and all the variables

3p+15=0

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

3p=-15

p=-15/3

p=-5

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