Bubble, bubble, toilet trouble!
We live in a 2 bath home, ranch style. The toilet and shower in the master are fine, as is the kitchen sink and the laundry room. In the main bath, my toilet won't drain, when plunged out it backs into the tub drain. Also, when I run the water in the tub, it makes the toilet bubble. Same thing when I run water in the hand sink. We are on city sewer, and I have looked through all 1000 of the questions. Is my line blocked somewhere under the house? Any and all help is greatly appreciated!