Bags of clementines have 12 each. For a party, Sal, Trisha, and Joe each brought bags of clementines. Altogether, there were 180 clementines. Sal brought 4 bags and Joe brought 6. Write the equation to determine how many bags Trisha brought, t . 50 points

Let t be the number of bags Trisha brought.

Since each bag has 12 clementines, Sal brought 4 * 12 = <<4*12=48>>48 clementines.
Joe brought 6 * 12 = <<6*12=72>>72 clementines.
The equation to determine Trisha's contribution would then be t * 12 = 180 - 48 - 72.

Simplifying the equation, we have:
t * 12 = 60.

So the equation to determine Trisha's contribution is t = 60 / 12.

Therefore, t = 5.