Here is a list of fractions.
9121520212825323040 \frac{9}{12} \quad \frac{15}{20} \quad \frac{21}{28} \quad \frac{25}{32} \quad \frac{30}{40} 1292015282132254030One of these fractions is not equivalent to 34\displaystyle \frac{3}{4}43
Write down this fraction.