7m=+-2m

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Solution for 7m=+-2m equation: 



7m=+-2m

We move all terms to the left:

7m-(+-2m)=0

We add all the numbers together, and all the variables

7m-(-2m)=0

We get rid of parentheses

7m+2m=0

We add all the numbers together, and all the variables

9m=0

m=0/9

m=0

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