-19=23-2m-m-4m

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Solution for -19=23-2m-m-4m equation: 



-19=23-2m-m-4m

We move all terms to the left:

-19-(23-2m-m-4m)=0

We add all the numbers together, and all the variables

-(-7m+23)-19=0

We get rid of parentheses

7m-23-19=0

We add all the numbers together, and all the variables

7m-42=0

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

7m=42

m=42/7

m=6

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