11=x-(-21)

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Solution for 11=x-(-21) equation: 



11=x-(-21)

We move all terms to the left:

11-(x-(-21))=0



We calculate terms in parentheses: -(x-(-21)), so:

x-(-21)

We add all the numbers together, and all the variables

x+21

Back to the equation:

-(x+21)



We get rid of parentheses

-x-21+11=0

We add all the numbers together, and all the variables

-1x-10=0

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

-x=10

x=10/-1

x=-10

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