6m+2m=21+m

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Solution for 6m+2m=21+m equation: 



6m+2m=21+m

We move all terms to the left:

6m+2m-(21+m)=0

We add all the numbers together, and all the variables

6m+2m-(m+21)=0

We add all the numbers together, and all the variables

8m-(m+21)=0

We get rid of parentheses

8m-m-21=0

We add all the numbers together, and all the variables

7m-21=0

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

7m=21

m=21/7

m=3

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