Leonardo bought a pizza for himself and his siblings to share. He personally ate 1/5 of a pizza. Raphael ate 1/5. Donatello ate 1/10, while Michelangelo ate 3/10. How much of the pizza is remaining?
1) What do I need to solve?
2) What math operations do I need to do?
3) What important information can I gather?
4) What does that equation look like?
5) Find the answer: