7m-9=3m+129

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Solution for 7m-9=3m+129 equation: 



7m-9=3m+129

We move all terms to the left:

7m-9-(3m+129)=0

We get rid of parentheses

7m-3m-129-9=0

We add all the numbers together, and all the variables

4m-138=0

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

4m=138

m=138/4

m=34+1/2

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