7-(x-2)=21

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Solution for 7-(x-2)=21 equation: 



7-(x-2)=21

We move all terms to the left:

7-(x-2)-(21)=0

We add all the numbers together, and all the variables

-(x-2)-14=0

We get rid of parentheses

-x+2-14=0

We add all the numbers together, and all the variables

-1x-12=0

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

-x=12

x=12/-1

x=-12

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