7-2mm=3

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Solution for 7-2mm=3 equation: 



7-2mm=3

We move all terms to the left:

7-2mm-(3)=0

We add all the numbers together, and all the variables

-2mm+4=0

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

-2mm=-4

m=-4/1

m=-4

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