-8m-20=-7m-7(m-4)

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Solution for -8m-20=-7m-7(m-4) equation: 



-8m-20=-7m-7(m-4)

We move all terms to the left:

-8m-20-(-7m-7(m-4))=0



We calculate terms in parentheses: -(-7m-7(m-4)), so:

-7m-7(m-4)

We multiply parentheses

-7m-7m+28

We add all the numbers together, and all the variables

-14m+28

Back to the equation:

-(-14m+28)



We get rid of parentheses

-8m+14m-28-20=0

We add all the numbers together, and all the variables

6m-48=0

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

6m=48

m=48/6

m=8

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