-x-12=3x+4

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Solution for -x-12=3x+4 equation: 



-x-12=3x+4

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-1x-3x-4-12=0

We add all the numbers together, and all the variables

-4x-16=0

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

-4x=16

x=16/-4

x=-4

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