Answer: 3.6
Step-by-step explanation: 8 1/5 is also 8.2 and 4 3/5 is also 4.6 so I am going to use these numbers in decimal form instead of fraction form. So you take 8.2 and you minus 4.6 from it which is now 3.6. Quite simple just the fractions may have confused you just a little. Have a great day and message me with any more questions!