To find how many bags of clementines Trisha brought, we can set up the equation based on the number of clementines each person brought.
First, let's denote:
- The number of bags Trisha brought as \( t \).
- Each bag contains 12 clementines.
Now we can calculate the total number of clementines contributed by each person:
- Sal brought 4 bags, so he brought \( 4 \times 12 = 48 \) clementines.
- Joe brought 6 bags, so he brought \( 6 \times 12 = 72 \) clementines.
- Trisha brought \( t \) bags, so she brought \( t \times 12 \) clementines.
Adding these amounts together gives us the total number of clementines:
\[ 48 + 72 + 12t = 180 \]
Simplifying the left side:
\[ 120 + 12t = 180 \]
Now the equation to determine how many bags Trisha brought is:
\[ 12t + 120 = 180 \]
You can solve this equation to find \( t \), the number of bags Trisha brought.