-8=4(m-20)

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



-8=4(m-20)

We move all terms to the left:

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



We calculate terms in parentheses: -(4(m-20)), so:

4(m-20)

We multiply parentheses

4m-80

Back to the equation:

-(4m-80)



We get rid of parentheses

-4m+80-8=0

We add all the numbers together, and all the variables

-4m+72=0

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

-4m=-72

m=-72/-4

m=+18

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