1/2 + 9/10 + 4/5

A. 2 1/5

B. 2 2/10

C. 14/17

D. 22/10

Here is the answer so yo you don't get confused

I didn't state this earlier, but you should find the common denominator so in this case it is 10.

1/2=5/10, 9/10 stays the same, and 4/5=8/10.

Now you add them up.

5/10 + 9/10 + 8/10 = 22/10

22/10 = 2 2/10

2 2/10 = 2 1/5

Answer: A. 2 1/5