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9(a-2)=15=33
We move all terms to the left:
9(a-2)-(15)=0
We multiply parentheses
9a-18-15=0
We add all the numbers together, and all the variables
9a-33=0
We move all terms containing a to the left, all other terms to the right
9a=33
a=33/9
a=3+2/3
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