Shannon sells handmade wallets for $12 each.

Yesterday, she sold n wallets. Today, she sold 3 less wallets than yesterday.

Over the past two days, she earned a total of $396.

Drag and drop terms and an operation to create an equation that models the situation. Then, solve for n, the number of wallets Shannon sold yesterday.

15
12n + 3
+
396
396
3n
n - 3
n - 3
n + 3
12n