Three consecutive integers add up to-57. What is the least of the 3 integers?

解

T h ree co n sec u t i v e in t e g ers a dd u p t o - 57. Wha t i s t h e l e a s t o f t h e 3 in t e g ers ?

The smallest number : 18

解答ステップ

Represent the numbers with

x

First number : x

Consecutive number 1 : x + 1

Consecutive number 2 : x + 2

A.T.Q.:

x + x + 1 + x + 2 = 57

解く

x + x + 1 + x + 2 = 57 : x = 18

x + 1 = 18 + 1 = 19

x + 2 = 18 + 2 = 20

Select the smallest solution:

18

The smallest number : 18