7m-4=8m

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Solution for 7m-4=8m equation: 



7m-4=8m

We move all terms to the left:

7m-4-(8m)=0

We add all the numbers together, and all the variables

-1m-4=0

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

-m=4

m=4/-1

m=-4

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