12=-8-m

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Solution for 12=-8-m equation: 



12=-8-m

We move all terms to the left:

12-(-8-m)=0

We add all the numbers together, and all the variables

-(-1m-8)+12=0

We get rid of parentheses

1m+8+12=0

We add all the numbers together, and all the variables

m+20=0

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

m=-20

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