-8m-9=126+7m

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Solution for -8m-9=126+7m equation: 



-8m-9=126+7m

We move all terms to the left:

-8m-9-(126+7m)=0

We add all the numbers together, and all the variables

-8m-(7m+126)-9=0

We get rid of parentheses

-8m-7m-126-9=0

We add all the numbers together, and all the variables

-15m-135=0

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

-15m=135

m=135/-15

m=-9

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