-7x-12=-7x+3(-4-x)

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Solution for -7x-12=-7x+3(-4-x) equation: 



-7x-12=-7x+3(-4-x)

We move all terms to the left:

-7x-12-(-7x+3(-4-x))=0

We add all the numbers together, and all the variables

-7x-(-7x+3(-1x-4))-12=0



We calculate terms in parentheses: -(-7x+3(-1x-4)), so:

-7x+3(-1x-4)

We multiply parentheses

-7x-3x-12

We add all the numbers together, and all the variables

-10x-12

Back to the equation:

-(-10x-12)



We get rid of parentheses

-7x+10x+12-12=0

We add all the numbers together, and all the variables

3x=0

x=0/3

x=0

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