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You are 3 years younger than your friend. Five years from now, the sum of your ages will be 31. Do you agree that the sum of your present ages is 20? Write your complete solution and explain your answer.

Sagot :

Answer:

21

Step-by-step explanation:

17 age of your friend 14 your age 3 years existence

17+14=31

17-5= 12

14-5= 9

12+9=21