Question

What should be subtract from 5by7 to get 1 by 21

Answer 1

Answer:

x=2/3

Step-by-step explanation:

first no is 5/7

let second no is x

5/7-x= 1/21

x= 1/21- 5/7

lcm is 21

1/21*1

5/7*3

1/21

15/21

x= 1/21-15/21

x= 1-15/21

x= 14/21

x = 2/3

Answer 2

Answer:

14 by 21 = 2/3

Step-by-step explanation:

5 by 7 - x = 1 by 21

5 by 7 - 1 by 21 = x

LCM OF 7 AND 21 = 21

15/21-1/21=X

14/21= X

2/3 = X