How many pieces of pizza remain?

Question

Janet ate 14 pieces of pizza. 2/9 of the pizza remains

Answer 1

If there are 2/9 left, then we ate 7/9

The 7/9 we ate totaled 14 slices so

 

(7/9)P = 14

P = 14(9/7)

P = 2(9)

P = 18

 

The pizza started with 18 slices

We ate 14 of those 18

There are 4 slices left

Answer 2

7/9 pizza = 14

 

pizza = 14(9/7) = 18