Three consecutive integers add up to 213. What is the least of these integers?

해법

T h ree co n sec u t i v e in t e g ers a dd u p t o 213. Wha t i s t h e l e a s t o f t h ese in t e g ers ?

The smallest number : 70

솔루션 단계

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 = 213

x + x + 1 + x + 2 = 213

해결 :

x = 70

x + 1 = 70 + 1 = 71

x + 2 = 70 + 2 = 72

Select the smallest solution:

70

The smallest number : 70