8-5m=-7m

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Solution for 8-5m=-7m equation: 



8-5m=-7m

We move all terms to the left:

8-5m-(-7m)=0

We get rid of parentheses

-5m+7m+8=0

We add all the numbers together, and all the variables

2m+8=0

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

2m=-8

m=-8/2

m=-4

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