3(-m-4)=42

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Solution for 3(-m-4)=42 equation: 



3(-m-4)=42

We move all terms to the left:

3(-m-4)-(42)=0

We add all the numbers together, and all the variables

3(-1m-4)-42=0

We multiply parentheses

-3m-12-42=0

We add all the numbers together, and all the variables

-3m-54=0

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

-3m=54

m=54/-3

m=-18

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