a+(-11)=9

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Solution for a+(-11)=9 equation: 



a+(-11)=9

We move all terms to the left:

a+(-11)-(9)=0

determiningTheFunctionDomain
a-9+(-11)=0

We add all the numbers together, and all the variables

a-20=0

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

a=20

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