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7/9=21/t
We move all terms to the left:
7/9-(21/t)=0
Domain of the equation: t)!=0We add all the numbers together, and all the variables
t!=0/1
t!=0
t∈R
-(+21/t)+7/9=0
We get rid of parentheses
-21/t+7/9=0
We calculate fractions
There is no solution for this equation
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