7=+1-2m

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Solution for 7=+1-2m equation: 



7=+1-2m

We move all terms to the left:

7-(+1-2m)=0

We add all the numbers together, and all the variables

-(-2m+1)+7=0

We get rid of parentheses

2m-1+7=0

We add all the numbers together, and all the variables

2m+6=0

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

2m=-6

m=-6/2

m=-3

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