a+20/4=9

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Solution for a+20/4=9 equation: 



a+20/4=9

We move all terms to the left:

a+20/4-(9)=0

determiningTheFunctionDomain
a-9+20/4=0

We add all the numbers together, and all the variables

a-4=0

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

a=4

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