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21/n=2.6/7.8
We move all terms to the left:
21/n-(2.6/7.8)=0
Domain of the equation: n!=0We add all the numbers together, and all the variables
n∈R
21/n-(+2.6/7.8)=0
We get rid of parentheses
21/n-2.6/7.8=0
We calculate fractions
There is no solution for this equation
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