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2-a/3=30
We move all terms to the left:
2-a/3-(30)=0
We add all the numbers together, and all the variables
-a/3-28=0
We multiply all the terms by the denominator
-a-28*3=0
We add all the numbers together, and all the variables
-1a-84=0
We move all terms containing a to the left, all other terms to the right
-a=84
a=84/-1
a=-84
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