17a+4a-20a-a+a=9

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Solution for 17a+4a-20a-a+a=9 equation: 



17a+4a-20a-a+a=9

We move all terms to the left:

17a+4a-20a-a+a-(9)=0

We add all the numbers together, and all the variables

a-9=0

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

a=9

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