-1=2m-7

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Solution for -1=2m-7 equation: 



-1=2m-7

We move all terms to the left:

-1-(2m-7)=0

We get rid of parentheses

-2m+7-1=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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