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-0.8a-8=2a
We move all terms to the left:
-0.8a-8-(2a)=0
We add all the numbers together, and all the variables
-2.8a-8=0
We move all terms containing a to the left, all other terms to the right
-2.8a=8
a=8/-2.8
a=-2+1/1.16666666667
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