Answer:
assuming all the / mean fractions (sorry i'm not sure)
first question:
4 and 2/5 is 22/5 (which is 44/10) and 1 and 7/10 is 17/10 so 44/10 - 17/10 = 27/10 (mixed number: 2 7/10)
second question:
5 and 2/3 is 17/3 (34/6) and 2 and 1/2 is 5/2 (15/6) so 34/6 - 15/6 = 19/6 (mixed number: 3 1/6)
third question:
17 (51/3) and 2 1/3 is 7/3 so 51/3 - 7/3 = 44/3 (mixed number: 14 2/3)
i think these are the answers, hope these help :D
