Four and one Firth's minus one and two thirds

4 1/5 - 2/3

Turn 4 1/5 into an improper fraction.

5x4+1 = 21/5

21/5 - 2/3

Multiply 5 and 21 by 3 and 3 and 2 by 5 to get the same denominator.

63/15-10/15=53/10

Turn the improper fraction into a mixed number by dividing the 53 and 10.

Answer: 5 3/10 or five and three tenths