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8.8a+11=81.4
We move all terms to the left:
8.8a+11-(81.4)=0
We add all the numbers together, and all the variables
8.8a-70.4=0
We move all terms containing a to the left, all other terms to the right
8.8a=70.4
a=70.4/8.8
a=8
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