find five consecutive even numbers whose sum is 30

解

f in d f i v e co n sec u t i v e e v e n n u mb ers w h ose s u m i s 30

The numbers : 2, 4, 6, 8, 10

解答ステップ

Represent the numbers with

x

First number : x

Consecutive number 1 : x + 2

Consecutive number 2 : x + 4

Consecutive number 3 : x + 6

Consecutive number 4 : x + 8

A.T.Q.:

x + x + 2 + x + 4 + x + 6 + x + 8 = 30

解く

x + x + 2 + x + 4 + x + 6 + x + 8 = 30 : x = 2

x + 2 = 2 + 2 = 4

x + 4 = 2 + 4 = 6

x + 6 = 2 + 6 = 8

x + 8 = 2 + 8 = 10

The numbers : 2, 4, 6, 8, 10