-20+m=19-2m

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Solution for -20+m=19-2m equation: 



-20+m=19-2m

We move all terms to the left:

-20+m-(19-2m)=0

We add all the numbers together, and all the variables

m-(-2m+19)-20=0

We get rid of parentheses

m+2m-19-20=0

We add all the numbers together, and all the variables

3m-39=0

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

3m=39

m=39/3

m=13

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