You turn 4 and 3/5 into 4 and 9/15 and you turn 2 and 1/3 into 2 and 5/15 and then you subtract to get 2 and 4/15.
Yeaaaaaaaaaaaaaaaaaaaaa :(
Idk if X is what you news but here it goes
ANSWER

EXPLANATION
Given;

The common factor is 3k;
Hence, factor out the common term;