Question

Sum of two numbers is 21. One of the numbers is twice the other, and then those numbers are ---------------​

Answer 1

Answer:

7 AND 14

Step-by-step explanation: LET THE NUMBER BE X

= X + 2X = 21 (GIVEN IN QUESTION)

= 3X= 21

= X= 21/3

=X=7

Answer 2

Answer:

call your numbers "n" and "2 times n"

when you add them up, you get that 3 n's added together is 21

so if 3n is 21, one of those n's must be...

7, which would make the other one...

14.The numbers are 7 & 14.

n(2) + n = 21

3n = 21

n=7

7(2) + n = 21

14 + n = 21

n = 21 - 14

n = 7

7+7 or 7*2 = 14