Question

The sum of three consecutive odd number is 21. find the number​

Answer 1

Answer:

5,7,9

Step-by-step explanation:

let 1st no. be x+1

2nd no. = x+3

3rd no. = x+5

acc.

(x+1)+(x+3)+(x+5)=21

3x+9=21

3x=21-9

3x=12

x=12/3

x=4

hence,

1st no. = (x+1)=(4+1)=5

2nd no. =(x+3)=(4+3)=7

3rd no. =(x+5)=(4+5)=9

thus ... nos. are 5,7,9

Answer 2

Answer:

6,7 & 8

Step-by-step explanation:

Let the no. 1 be x

other=x+1

third=x+2

ATQ

x+x+1+x+2=21

3x+3=21

3x=21-3

3x=18

x=18/3

x=6

x=6 , x+1= 6+1= 7 , x+2= 6+2= 8