-21=(x-5)

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Solution for -21=(x-5) equation: 



-21=(x-5)

We move all terms to the left:

-21-((x-5))=0



We calculate terms in parentheses: -((x-5)), so:

(x-5)

We get rid of parentheses

x-5

Back to the equation:

-(x-5)



We get rid of parentheses

-x+5-21=0

We add all the numbers together, and all the variables

-1x-16=0

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

-x=16

x=16/-1

x=-16

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