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פּוֹפּוּלָרִי >

Find three consecutive even integers such that the sum of the smallest number and twice the middle number is 20 more than the largest number.

פתרון

Find three consecutive even integers such that the sum of the smallest number and twice the middle number is 20 more than the largest number.

פתרון

The numbers : 10, 12, 14

צעדי פתרון

Represent the numbers with

x

:

First number : x

Consecutive number 1 : x + 2

Consecutive number 2 : x + 4

A.T.Q.:

x + 2 (x + 2) = 20 + x + 4

x + 2 (x + 2) = 20 + x + 4

פתור את:

x = 10

x + 2 = 10 + 2 = 12

x + 4 = 10 + 4 = 14

The numbers : 10, 12, 14

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