3m-9=-9-4m-m

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Solution for 3m-9=-9-4m-m equation: 



3m-9=-9-4m-m

We move all terms to the left:

3m-9-(-9-4m-m)=0

We add all the numbers together, and all the variables

3m-(-5m-9)-9=0

We get rid of parentheses

3m+5m+9-9=0

We add all the numbers together, and all the variables

8m=0

m=0/8

m=0

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