42=m-7m

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Solution for 42=m-7m equation: 



42=m-7m

We move all terms to the left:

42-(m-7m)=0

We add all the numbers together, and all the variables

-(-6m)+42=0

We get rid of parentheses

6m+42=0

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

6m=-42

m=-42/6

m=-7

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