3=7m-8m

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Solution for 3=7m-8m equation: 



3=7m-8m

We move all terms to the left:

3-(7m-8m)=0

We add all the numbers together, and all the variables

-(-1m)+3=0

We get rid of parentheses

1m+3=0

We add all the numbers together, and all the variables

m+3=0

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

m=-3

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