Question

The sunof three consecutive odd number is 21.Find the number​

Answer 1

Answer:

The answer is 5,7 and 9

Step-by-step explanation:

Let the three consecutive odd numbers are $x,x+2$ and $x+4$

• Since two consecutive odd numbers differ by 2

Given their sum is 21

       $\Rightarrow x+x+2+x+4=21\\\Rightarrow 3x+6=21\\\Rightarrow 3x=21-6\\\Rightarrow 3x=15\\\Rightarrow x=\dfrac{15}{3}=5$

Hence the numbers are $5,5+2=7,5+4=9$

Answer 2

Answer:

5,7,9

Step-by-step explanation:

let the three consecutive numbers be x, x+2, x+4.

according to question,

x+x+2+x+4=21

3x+6=21

3x=21-6

3x= 15

x=15/3

x=5

x+1=5+2=7

x+2=5+4=9

therefore, the required 3 consecutive numbera are 5,7,9