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0.8a-17=16.6
We move all terms to the left:
0.8a-17-(16.6)=0
We add all the numbers together, and all the variables
0.8a-33.6=0
We move all terms containing a to the left, all other terms to the right
0.8a=33.6
a=33.6/0.8
a=42
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