To determine the number of baskets Andrew made, we can set up the equation based on the information provided.
Let \( b \) represent the number of baskets Andrew made. According to the problem, Joe made 9 baskets, which is 2 more than what Andrew made. We can express this relationship as:
\[ 9 = b + 2 \]
If you want to isolate \( b \) to find out how many baskets Andrew made, you can rearrange the equation:
\[ b = 9 - 2 \]
Thus, the number of baskets Andrew made is:
\[ b = 7 \]
So the completed equation is \( 9 = b + 2 \), and Andrew made 7 baskets.