I need answers asap! I gave an entire essay I have to write and it's due tomorrow, but I'm stuck on my stupid algebra homework!

There are nine water bottles in a fridge. Three full boxes are added. Two more boxes are added, both of which have one fewer bottle than the other three. There are now 67 bottles in the fridge. Write and solve an equation to find the number of bottles in a full box.

Oof I accidentally put it under s.s sorry