13-m=-21+2m

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Solution for 13-m=-21+2m equation: 



13-m=-21+2m

We move all terms to the left:

13-m-(-21+2m)=0

We add all the numbers together, and all the variables

-m-(2m-21)+13=0

We add all the numbers together, and all the variables

-1m-(2m-21)+13=0

We get rid of parentheses

-1m-2m+21+13=0

We add all the numbers together, and all the variables

-3m+34=0

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

-3m=-34

m=-34/-3

m=11+1/3

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