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인기 있는 >

Find three consecutive integers whose sum is 22 less than two times the larger number.

해법

Find three consecutive integers whose sum is 22 less than two times the larger number.

해법

The numbers : - 21, - 20, - 19

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 = 2 (x + 2) - 22

x + x + 1 + x + 2 = 2 (x + 2) - 22

해결 :

x = - 21

x + 1 = - 21 + 1 = - 20

x + 2 = - 21 + 2 = - 19

The numbers : - 21, - 20, - 19

인기 있는 예

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