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-0.8a-6.2=0.2
We move all terms to the left:
-0.8a-6.2-(0.2)=0
We add all the numbers together, and all the variables
-0.8a-6.4=0
We move all terms containing a to the left, all other terms to the right
-0.8a=6.4
a=6.4/-0.8
a=-8
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