-3x-12=16+x

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Solution for -3x-12=16+x equation: 



-3x-12=16+x

We move all terms to the left:

-3x-12-(16+x)=0

We add all the numbers together, and all the variables

-3x-(x+16)-12=0

We get rid of parentheses

-3x-x-16-12=0

We add all the numbers together, and all the variables

-4x-28=0

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

-4x=28

x=28/-4

x=-7

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