-13+31=-3(x+6)

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Solution for -13+31=-3(x+6) equation: 



-13+31=-3(x+6)

We move all terms to the left:

-13+31-(-3(x+6))=0

We add all the numbers together, and all the variables

-(-3(x+6))+18=0



We calculate terms in parentheses: -(-3(x+6)), so:

-3(x+6)

We multiply parentheses

-3x-18

Back to the equation:

-(-3x-18)



We get rid of parentheses

3x+18+18=0

We add all the numbers together, and all the variables

3x+36=0

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

3x=-36

x=-36/3

x=-12

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