Here is a list of fractions.
15203344121626322128 \frac{15}{20} \quad \frac{33}{44} \quad \frac{12}{16} \quad \frac{26}{32} \quad \frac{21}{28} 20154433161232262821One of these fractions is not equivalent to 34\displaystyle \frac{3}{4}43
Write down this fraction.