20=-2(m+1)

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Solution for 20=-2(m+1) equation: 



20=-2(m+1)

We move all terms to the left:

20-(-2(m+1))=0



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

-2(m+1)

We multiply parentheses

-2m-2

Back to the equation:

-(-2m-2)



We get rid of parentheses

2m+2+20=0

We add all the numbers together, and all the variables

2m+22=0

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

2m=-22

m=-22/2

m=-11

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