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7/2.1=3/a
We move all terms to the left:
7/2.1-(3/a)=0
Domain of the equation: a)!=0We add all the numbers together, and all the variables
a!=0/1
a!=0
a∈R
-(+3/a)+7/2.1=0
We get rid of parentheses
-3/a+7/2.1=0
We calculate fractions
There is no solution for this equation
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