-1-8m=-7m-9

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Solution for -1-8m=-7m-9 equation: 



-1-8m=-7m-9

We move all terms to the left:

-1-8m-(-7m-9)=0

We get rid of parentheses

-8m+7m+9-1=0

We add all the numbers together, and all the variables

-1m+8=0

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

-m=-8

m=-8/-1

m=+8

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