-7=9+m

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Solution for -7=9+m equation: 



-7=9+m

We move all terms to the left:

-7-(9+m)=0

We add all the numbers together, and all the variables

-(m+9)-7=0

We get rid of parentheses

-m-9-7=0

We add all the numbers together, and all the variables

-1m-16=0

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

-m=16

m=16/-1

m=-16

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