-8m=-9-7m

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Solution for -8m=-9-7m equation: 



-8m=-9-7m

We move all terms to the left:

-8m-(-9-7m)=0

We add all the numbers together, and all the variables

-8m-(-7m-9)=0

We get rid of parentheses

-8m+7m+9=0

We add all the numbers together, and all the variables

-1m+9=0

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

-m=-9

m=-9/-1

m=+9

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