-24 4/5 - 6 7/10
To subtract mixed numbers, first convert them to improper fractions:
-24 4/5 can be written as an improper fraction: -24 4/5 = -24 + 4/5 = -24(5/5) + 4/5 = -120/5 + 4/5 = -116/5
-6 7/10 can be written as an improper fraction: -6 7/10 = -6 + 7/10 = -6(10/10) + 7/10 = -60/10 + 7/10 = -53/10
Now, subtract the two improper fractions:
-116/5 - 53/10 = (-116/5)(2/2) - 53/10 = -232/10 - 53/10 = -285/10
The result is -285/10.