Since both numbers are even numbers, yes 78/80 can be reduced.
7 over 80 reduced to in a fraction = 7/80
reduced fraction of 74 over 160 = 37/80
4/5
yes 2/5
90: 80/90 78/90
8055/78 cannot be reduced.
7 over 80 reduced to in a fraction = 7/80
54/78 = 9/13
The fraction 3/80 cannot be reduced any more.
No.
2/13
Yes: 7/26
156/74 = 78/37 which cannot be reduced further.
50/80 = 5/8
reduced fraction of 74 over 160 = 37/80
80/170 = 8/17
39/40