-3+1=x+21

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Solution for -3+1=x+21 equation: 



-3+1=x+21

We move all terms to the left:

-3+1-(x+21)=0

We add all the numbers together, and all the variables

-(x+21)-2=0

We get rid of parentheses

-x-21-2=0

We add all the numbers together, and all the variables

-1x-23=0

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

-x=23

x=23/-1

x=-23

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