Answer: Henry drove 7 3/4 miles last week.
Explanation:
First, you need to find the GCF of both numbers which is 4.
7 1/2 -----> 7 2/4
1/4 --------> 1/4
Add the numbers together.
7 3/4
Therefore, Henry drove 7 3/4 miles in total last week. Hope this helps!