7m+9=2m-1

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Solution for 7m+9=2m-1 equation: 



7m+9=2m-1

We move all terms to the left:

7m+9-(2m-1)=0

We get rid of parentheses

7m-2m+1+9=0

We add all the numbers together, and all the variables

5m+10=0

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

5m=-10

m=-10/5

m=-2

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