Tyrel eats 1/2 of a pizza. Dana eats 1/3 of what Tyrel didn’t eat and feeds the red to the dog. How much of the pizza did the dog get?

Answer 1

1 - 1/2 = 1/2
1/2 * 1/3 = 1/6
1 - 1/2 - 1/6 = ?