7m-7=8m

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Solution for 7m-7=8m equation: 



7m-7=8m

We move all terms to the left:

7m-7-(8m)=0

We add all the numbers together, and all the variables

-1m-7=0

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

-m=7

m=7/-1

m=-7

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