. A family of four orders one extra large pizza. The father eats 7/18 of the pizza, the older child eats 1/12 of the pizza, and the younger child eats 3/8 of th

Question

I am not sure how to begin to set up the problem, please help.

 

.
A family of four orders one extra large pizza. The father eats 7/18 of the
pizza, the older child eats 1/12 of the pizza, and the younger child eats 3/8
of the pizza.  How much pizza is left for
the mother?

 

Answer 1

1 - 7/18 - 1/12 - 3/8 = 11/72