12=-(2+x)-(4+2x)

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Solution for 12=-(2+x)-(4+2x) equation: 



12=-(2+x)-(4+2x)

We move all terms to the left:

12-(-(2+x)-(4+2x))=0

We add all the numbers together, and all the variables

-(-(x+2)-(2x+4))+12=0



We calculate terms in parentheses: -(-(x+2)-(2x+4)), so:

-(x+2)-(2x+4)

We get rid of parentheses

-x-2x-2-4

We add all the numbers together, and all the variables

-3x-6

Back to the equation:

-(-3x-6)



We get rid of parentheses

3x+6+12=0

We add all the numbers together, and all the variables

3x+18=0

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

3x=-18

x=-18/3

x=-6

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