7-(3+5m)-9=-20

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Solution for 7-(3+5m)-9=-20 equation: 



7-(3+5m)-9=-20

We move all terms to the left:

7-(3+5m)-9-(-20)=0

We add all the numbers together, and all the variables

-(5m+3)+7-9-(-20)=0

We add all the numbers together, and all the variables

-(5m+3)+18=0

We get rid of parentheses

-5m-3+18=0

We add all the numbers together, and all the variables

-5m+15=0

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

-5m=-15

m=-15/-5

m=+3

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