Question

8. Find three consecutive odd numbers who sum is 21
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Answer 1

Answer:

5,7,9

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Answer 2

Answer:

5, 7, 9

Step-by-step explanation:

Let the three consecutive odd number be x, x + 2, x + 4.

Given: The sum of the three odd numbers is 21

or, x+x+2+x+4 = 21

or, 3x+6=21

or, 3x = 21-6

or, 3x = 15

or, x= 15/3 = 5

Now,

x+2 = 5+2 = 7

x+4 = 5+4 = 9

Therefore the three consecutive odd numbers whose sum is 21 are 5, 7 and 9