You know that the number of pepperoni pizzas is 4 less than twice the number of cheese pizzzas. You also know that the number of combo pizzas is 8 less than the number of cheese pizzas. Finally, you know that the total number of pizzas ordered is 110.

See explanation

Step-by-step explanation:

Let the cheese pizzas be denoted by x.

Since pepperoni pizzas is 4 less than twice the number of cheese pizzzas. This will be:

= (2 × x) - 4.

= 2x - 4

Since combo pizzas is 8 less than the number of cheese pizzas. This will be:

= x - 8

Then we add all the pizzas and equate to 110. This will be:

x + (x - 8) + (2x - 4) = 110

x + x - 8 + 2x - 4 = 110

4x - 12 = 110

4x = 110 + 12

4x = 122

x = 122/4

x = 30.5

Therefore, cheese pizza = 30.5

Combo pizza = x - 8 = 30.5 - 8 = 22.5

Pepperoni pizza = 2x - 4 = 2(30.5) - 4 = 57