-x-21=13+2x

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Solution for -x-21=13+2x equation: 



-x-21=13+2x

We move all terms to the left:

-x-21-(13+2x)=0

We add all the numbers together, and all the variables

-x-(2x+13)-21=0

We add all the numbers together, and all the variables

-1x-(2x+13)-21=0

We get rid of parentheses

-1x-2x-13-21=0

We add all the numbers together, and all the variables

-3x-34=0

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

-3x=34

x=34/-3

x=-11+1/3

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