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2.8/8.1=x/509
We move all terms to the left:
2.8/8.1-(x/509)=0
We add all the numbers together, and all the variables
-(+x/509)+2.8/8.1=0
We get rid of parentheses
-x/509+2.8/8.1=0
We calculate fractions
There is no solution for this equation
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