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18/n=21/28=
We move all terms to the left:
18/n-(21/28)=0
Domain of the equation: n!=0We add all the numbers together, and all the variables
n∈R
18/n-(+21/28)=0
We get rid of parentheses
18/n-21/28=0
We calculate fractions
There is no solution for this equation
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