Answer:
1 / 10
Explanation:
To reduce 78 / 780, take the greatest common factor for both the numbers 78 and 780 and divide them by the greatest common factor.
For the two given numbers, our greatest common factor will be 78 so we will divide 78 and 780 by 78 to get:
78 / 78 = 1; and
780 / 78 = 10
Therefore 78 / 780 reduces to a minimum value of 1 / 10.