all of the floors in a bedroom suit are tiled. which would cost the most to tile, the bathroom, the closet, or both are the same

They are both the same.

Step-by-step explanation:

The closet has 3 tiles, and the bathroom has 3 tiles as well (add up the 2 half tiles) thus they both cost the same to tile.

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !