to find the answer you need to turn them into improper fractions to do that you would multiply the whole number by the denominator and add the top number. 4 3/4 = 19/4 2 2/5= 12/5 So then you would find a common denominator for 19/4 And 12/5 a common multiply of 4 and 5 is 20 so 19/4 would turn into