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5a=18.1
We move all terms to the left:
5a-(18.1)=0
We add all the numbers together, and all the variables
5a-18.1=0
We move all terms containing a to the left, all other terms to the right
5a=18.1
a=18.1/5
a=3+2.8181818181818/4.5454545454545
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