Step-by-step explanation: The set of counting numbers (1, 2, 3, 4, 5) is called the set on natural numbers. This set of numbers starts at 0 and goes on indefinitely. When we include 0 in the set of natural numbers, the new set is called whole numbers. (0, 1, 2, 3, 4, 5) If we also include a numbers opposite, then we are dealing with integers. Integers are positive and negative whole numbers, including 0, but they can't be in the form of fractions or decimals. Some examples of integers can be (-25, -5, -16, 73).
The equation to this question can be written as 5/6 + 5/6 + 5/6 or 5/6 x 3.
To multiply 5/6 by 3, we can set it up as . Now to multiple, we just multiply straight across. We do 5 * 3 over 6 * 1 to get 15/6. Now, all we have to do is simplify the fraction. 6 goes into 15 two times, so we know they ate 2 pizzas. Now we are left with 3/6. 3/6 can be rewritten as . In total, they ate 2 pizzas.