Question

What should be added to 12 whole 7 by 8 to get 90 whole 1 by 7

Answer 1

Answer:

77 whole 15 by 56

Step-by-step explanation:

12 whole 7 by 8 = 103/8

and 90 whole 1 by 7 = 631/7

⇒ 103/8 +x = 631 / 7

⇒ x=  631/7 - 103/8

⇒x=4327/56

or 77 whole 15 by 56