-3=9+x-7

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Solution for -3=9+x-7 equation: 



-3=9+x-7

We move all terms to the left:

-3-(9+x-7)=0

We add all the numbers together, and all the variables

-(x+2)-3=0

We get rid of parentheses

-x-2-3=0

We add all the numbers together, and all the variables

-1x-5=0

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

-x=5

x=5/-1

x=-5

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