2m+20=4m-40

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Solution for 2m+20=4m-40 equation: 



2m+20=4m-40

We move all terms to the left:

2m+20-(4m-40)=0

We get rid of parentheses

2m-4m+40+20=0

We add all the numbers together, and all the variables

-2m+60=0

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

-2m=-60

m=-60/-2

m=+30

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