7+28m=28+21m

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Solution for 7+28m=28+21m equation: 



7+28m=28+21m

We move all terms to the left:

7+28m-(28+21m)=0

We add all the numbers together, and all the variables

28m-(21m+28)+7=0

We get rid of parentheses

28m-21m-28+7=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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