-20m-19=-8m+20-15m

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Solution for -20m-19=-8m+20-15m equation: 



-20m-19=-8m+20-15m

We move all terms to the left:

-20m-19-(-8m+20-15m)=0

We add all the numbers together, and all the variables

-20m-(-23m+20)-19=0

We get rid of parentheses

-20m+23m-20-19=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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