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3.2+3.1a=13.43
We move all terms to the left:
3.2+3.1a-(13.43)=0
We add all the numbers together, and all the variables
3.1a-10.23=0
We move all terms containing a to the left, all other terms to the right
3.1a=10.23
a=10.23/3.1
a=3+0.93/3.1
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