13-m=m-7

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Solution for 13-m=m-7 equation: 



13-m=m-7

We move all terms to the left:

13-m-(m-7)=0

We add all the numbers together, and all the variables

-1m-(m-7)+13=0

We get rid of parentheses

-1m-m+7+13=0

We add all the numbers together, and all the variables

-2m+20=0

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

-2m=-20

m=-20/-2

m=+10

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