Answer:
3/10
Step-by-step explanation:
Okay so we know that a whole pizza = 1
First of all let's convert all the denominators
1 = 10/10
1/2 = 5/10
1/5 = 2/10
5/10 + 2/10 = 7/10
10/10 - 7/10 = 3/10
