20=m+11

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Solution for 20=m+11 equation: 



20=m+11

We move all terms to the left:

20-(m+11)=0

We get rid of parentheses

-m-11+20=0

We add all the numbers together, and all the variables

-1m+9=0

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

-m=-9

m=-9/-1

m=+9

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