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2.1/2=a-5/4
We move all terms to the left:
2.1/2-(a-5/4)=0
We add all the numbers together, and all the variables
-(+a-5/4)+2.1/2=0
We get rid of parentheses
-a+5/4+2.1/2=0
We calculate fractions
There is no solution for this equation
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