7m-12=5m+30

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Solution for 7m-12=5m+30 equation: 



7m-12=5m+30

We move all terms to the left:

7m-12-(5m+30)=0

We get rid of parentheses

7m-5m-30-12=0

We add all the numbers together, and all the variables

2m-42=0

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

2m=42

m=42/2

m=21

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