22m+21=15m+42

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Solution for 22m+21=15m+42 equation: 



22m+21=15m+42

We move all terms to the left:

22m+21-(15m+42)=0

We get rid of parentheses

22m-15m-42+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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