5x+15=-7(x+3)

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Solution for 5x+15=-7(x+3) equation: 



5x+15=-7(x+3)

We move all terms to the left:

5x+15-(-7(x+3))=0



We calculate terms in parentheses: -(-7(x+3)), so:

-7(x+3)

We multiply parentheses

-7x-21

Back to the equation:

-(-7x-21)



We get rid of parentheses

5x+7x+21+15=0

We add all the numbers together, and all the variables

12x+36=0

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

12x=-36

x=-36/12

x=-3

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