Answer:
Monty can find an equivalent fraction greater than 6 by multiplying a factor to each part of the fraction. However, in this case that's not possible because that's a proper fraction which meas the result will be always less than zero, no matter which equivalent fraction you find, it will always be a proper fraction.
On the other hand, we can find an equivalent fraction with a denominator less than 6. If we simplify the fraction, we can find it

Therefore, 2/3 is an equivalent fraction with a denominator less than 6.