Question

Find the sum or difference.

20/21. - 5/21. HELP ME PLEASE
A.2/3
B.5/7
C.16/21.

Answer 1

5/7, 20/21 - 5/21 can be thought of as 20 -5, which equals 15, 15/21 can be narrowed down to 5/7 by dividing by 3.

Answer 2

It would be B. because if you subtract them you would have 15/21. divide both by three and you get 5/7. Hope this helps

Explanation: