-4(m+7)=-8(m+1)

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Solution for -4(m+7)=-8(m+1) equation: 



-4(m+7)=-8(m+1)

We move all terms to the left:

-4(m+7)-(-8(m+1))=0

We multiply parentheses

-4m-(-8(m+1))-28=0



We calculate terms in parentheses: -(-8(m+1)), so:

-8(m+1)

We multiply parentheses

-8m-8

Back to the equation:

-(-8m-8)



We get rid of parentheses

-4m+8m+8-28=0

We add all the numbers together, and all the variables

4m-20=0

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

4m=20

m=20/4

m=5

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