20=4(2m+7)

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Solution for 20=4(2m+7) equation: 



20=4(2m+7)

We move all terms to the left:

20-(4(2m+7))=0



We calculate terms in parentheses: -(4(2m+7)), so:

4(2m+7)

We multiply parentheses

8m+28

Back to the equation:

-(8m+28)



We get rid of parentheses

-8m-28+20=0

We add all the numbers together, and all the variables

-8m-8=0

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

-8m=8

m=8/-8

m=-1

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