12m+9m=-(8m+8)+10(5+5m)

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Solution for 12m+9m=-(8m+8)+10(5+5m) equation: 



12m+9m=-(8m+8)+10(5+5m)

We move all terms to the left:

12m+9m-(-(8m+8)+10(5+5m))=0

We add all the numbers together, and all the variables

12m+9m-(-(8m+8)+10(5m+5))=0

We add all the numbers together, and all the variables

21m-(-(8m+8)+10(5m+5))=0



We calculate terms in parentheses: -(-(8m+8)+10(5m+5)), so:

-(8m+8)+10(5m+5)

We multiply parentheses

-(8m+8)+50m+50

We get rid of parentheses

-8m+50m-8+50

We add all the numbers together, and all the variables

42m+42

Back to the equation:

-(42m+42)



We get rid of parentheses

21m-42m-42=0

We add all the numbers together, and all the variables

-21m-42=0

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

-21m=42

m=42/-21

m=-2

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