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8.1+2.3=5.1a-3.1
We move all terms to the left:
8.1+2.3-(5.1a-3.1)=0
We add all the numbers together, and all the variables
-(5.1a-3.1)+10.4=0
We get rid of parentheses
-5.1a+3.1+10.4=0
We add all the numbers together, and all the variables
-5.1a+13.5=0
We move all terms containing a to the left, all other terms to the right
-5.1a=-13.5
a=-13.5/-5.1
a=2+2.5384615384615/3.9230769230769
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