No, 20 and 77 are coprime: their highest common factor is 1.
The fraction 77/6 cannot be reduced any more.
The fraction 77/300 cannot be reduced any more.
The fraction 12/77 cannot be reduced any more.
No, it is in simplest.
1 over 77
That fraction is in simplest form, and can't be reduced.
28 over 20 reduced = 7/5
The fraction 77/60 cannot be reduced any more.
20 over 53 can not be reduced because 53 is a prime number
6 over 20 can be reduced by dividing both numbers by 2 and get the answer 3 over 10 which can't be reduced any further.
It is already a reduced fraction.
It is: 77/140 = 11/20