Tom ate 3/8 of a pizza, and his brother ate 2/5 of the remainder. What fraction of the pizza was left?

3/8 is left

Step-by-step explanation:

Tom ate 3/8 of the pizza

Take 1 - 3/8

8/8 - 3/8 = 5/8

5/8 of the pizza is left

The brother at 2/5 of the remainder

5/8  * 2/5

2/8

1/4

His brother at 1/4 of the  of the pizza

5/8 - 1/4

5/8 - 2/8

3/8 is left

-5, -2, 4

Step-by-step explanation:

(x) = (x - 4)(x + 2)(x + 5)

(x-4) = 0

x = 4

(x+2) = 0

x = -2

(x+5) = 0

x = -5