7=-20+x

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Solution for 7=-20+x equation: 



7=-20+x

We move all terms to the left:

7-(-20+x)=0

We add all the numbers together, and all the variables

-(x-20)+7=0

We get rid of parentheses

-x+20+7=0

We add all the numbers together, and all the variables

-1x+27=0

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

-x=-27

x=-27/-1

x=+27

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