Question

What should be added to 7 whole 4 upon 15 to get 8 whole 2 upon 5

Answer 1

7 whole 4 upon 15=109/15

8 whole 2 upon 5=42/5

Let the number be x.

109/15+x=42/5

x=42/5-109/15

x=126-109/15

x=17/15

x=17/15

Hope this helpful