12=-3(x+5)-6x

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Solution for 12=-3(x+5)-6x equation: 



12=-3(x+5)-6x

We move all terms to the left:

12-(-3(x+5)-6x)=0



We calculate terms in parentheses: -(-3(x+5)-6x), so:

-3(x+5)-6x

We add all the numbers together, and all the variables

-6x-3(x+5)

We multiply parentheses

-6x-3x-15

We add all the numbers together, and all the variables

-9x-15

Back to the equation:

-(-9x-15)



We get rid of parentheses

9x+15+12=0

We add all the numbers together, and all the variables

9x+27=0

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

9x=-27

x=-27/9

x=-3

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