-3m+7m=90

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Solution for -3m+7m=90 equation: 



-3m+7m=90

We move all terms to the left:

-3m+7m-(90)=0

We add all the numbers together, and all the variables

4m-90=0

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

4m=90

m=90/4

m=22+1/2

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