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-0a.8a-8=0.2
We move all terms to the left:
-0a.8a-8-(0.2)=0
We add all the numbers together, and all the variables
-0a.8a-8.2=0
We move all terms containing a to the left, all other terms to the right
-0a.8a=8.2
a=8.2/1
a=8.2
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