15=3(x+13)

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Solution for 15=3(x+13) equation: 



15=3(x+13)

We move all terms to the left:

15-(3(x+13))=0



We calculate terms in parentheses: -(3(x+13)), so:

3(x+13)

We multiply parentheses

3x+39

Back to the equation:

-(3x+39)



We get rid of parentheses

-3x-39+15=0

We add all the numbers together, and all the variables

-3x-24=0

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

-3x=24

x=24/-3

x=-8

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