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Find three consecutive integers such that the sum of the first and third is 142

解答

Find three consecutive integers such that the sum of the first and third is 142

解答

The numbers : 70, 71, 72

求解步骤

Represent the numbers with

x

:

First number : x

Consecutive number 1 : x + 1

Consecutive number 2 : x + 2

A.T.Q.:

x + x + 2 = 142

解

x + x + 2 = 142 : x = 70

x + 1 = 70 + 1 = 71

x + 2 = 70 + 2 = 72

The numbers : 70, 71, 72

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