9m-21+3m=7m+43

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Solution for 9m-21+3m=7m+43 equation: 



9m-21+3m=7m+43

We move all terms to the left:

9m-21+3m-(7m+43)=0

We add all the numbers together, and all the variables

12m-(7m+43)-21=0

We get rid of parentheses

12m-7m-43-21=0

We add all the numbers together, and all the variables

5m-64=0

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

5m=64

m=64/5

m=12+4/5

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