3=m+7

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Solution for 3=m+7 equation: 



3=m+7

We move all terms to the left:

3-(m+7)=0

We get rid of parentheses

-m-7+3=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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