-12x-28=-(x-4)-7x

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Solution for -12x-28=-(x-4)-7x equation: 



-12x-28=-(x-4)-7x

We move all terms to the left:

-12x-28-(-(x-4)-7x)=0



We calculate terms in parentheses: -(-(x-4)-7x), so:

-(x-4)-7x

We add all the numbers together, and all the variables

-7x-(x-4)

We get rid of parentheses

-7x-x+4

We add all the numbers together, and all the variables

-8x+4

Back to the equation:

-(-8x+4)



We get rid of parentheses

-12x+8x-4-28=0

We add all the numbers together, and all the variables

-4x-32=0

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

-4x=32

x=32/-4

x=-8

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