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Popolare >

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

Soluzione

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

Soluzione

The numbers : - 21, - 20, - 19

Fasi della soluzione

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

Risolvi

x + x + 1 + x + 2 = 2 (x + 2) - 22 : x = - 21

x + 1 = - 21 + 1 = - 20

x + 2 = - 21 + 2 = - 19

The numbers : - 21, - 20, - 19

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