13-m=2(-4-m)

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Solution for 13-m=2(-4-m) equation: 



13-m=2(-4-m)

We move all terms to the left:

13-m-(2(-4-m))=0

We add all the numbers together, and all the variables

-m-(2(-1m-4))+13=0

We add all the numbers together, and all the variables

-1m-(2(-1m-4))+13=0



We calculate terms in parentheses: -(2(-1m-4)), so:

2(-1m-4)

We multiply parentheses

-2m-8

Back to the equation:

-(-2m-8)



We get rid of parentheses

-1m+2m+8+13=0

We add all the numbers together, and all the variables

m+21=0

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

m=-21

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