-21=5+x

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Solution for -21=5+x equation: 



-21=5+x

We move all terms to the left:

-21-(5+x)=0

We add all the numbers together, and all the variables

-(x+5)-21=0

We get rid of parentheses

-x-5-21=0

We add all the numbers together, and all the variables

-1x-26=0

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

-x=26

x=26/-1

x=-26

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