21=-11+x

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Solution for 21=-11+x equation: 



21=-11+x

We move all terms to the left:

21-(-11+x)=0

We add all the numbers together, and all the variables

-(x-11)+21=0

We get rid of parentheses

-x+11+21=0

We add all the numbers together, and all the variables

-1x+32=0

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

-x=-32

x=-32/-1

x=+32

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