-m-2=18

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Solution for -m-2=18 equation: 



-m-2=18

We move all terms to the left:

-m-2-(18)=0

We add all the numbers together, and all the variables

-1m-20=0

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

-m=20

m=20/-1

m=-20

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