Equivalent to what? No fraction is "equivalent" by itself; you can say that two or more fractions are equivalent, if they represent the same number.
The equivalent fraction for five tenths is one half.
equivalent fraction of 11/2 = 22/4 half of 11 = 11/2 equivalent fraction of 11/2 = 22/4
It is equivalent to some fractions, not to others!
2/4 is equivalent to 1/2
One half as a fraction is 1/2 and is equivalent to 5/10 or 0.5 as a decimal
You can use k/(2*k), where k is any non-zero integer, as an equivalent fraction.