-20-3m=m+20

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Solution for -20-3m=m+20 equation: 



-20-3m=m+20

We move all terms to the left:

-20-3m-(m+20)=0

We get rid of parentheses

-3m-m-20-20=0

We add all the numbers together, and all the variables

-4m-40=0

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

-4m=40

m=40/-4

m=-10

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