21-(x-8)=13

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Solution for 21-(x-8)=13 equation: 



21-(x-8)=13

We move all terms to the left:

21-(x-8)-(13)=0

We add all the numbers together, and all the variables

-(x-8)+8=0

We get rid of parentheses

-x+8+8=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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