Question

the sum of three consecutive odd numbers is 21find the numbers
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Answer 1

Answer:

5, 7 and 9

Step-by-step explanation:

3x = 15 {subtracted 6 from each side}

x = 5 {divided each side by 3}

x + 2 = 7 {substituted 5, in for x, into x + 2}

x + 4 = 9 {substituted 5, in for x, into x + 4}

Answer 2

Answer:

Let one number be x.

Then, the other number will be x+2.

The third number = x+2+2=x+4

It is given that their sum is 21.

So, x+(x+2)+(x+4)=21

3x+6=21

3x=15

x=5

and x+2=7

x+4=9.