Answer:
24
Explanation:
Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
Factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
So the greatest common factor (GCF) of 48 and 72 is 24.
Therefore, to simplify the fraction, divide the numerator and denominator by 24: