three people share a sum of money. the first recieves 3/7 and the seond gets 1/3 what does the last person get?

Question

 please answer aap

Answer 1

For this problem, you are just adding the 3 numbers to get 1 whole.

So 3/7 + 1/3 + X = 1

First, you need a common denominator:

21

(3/7)(3/3) + (1/3)(7/7) + X = 21/21

9/21 + 7/21 + X = 21/21

16/21 + X = 21/21

X = 5/21