100 Doors Runaway Level 7 8 9

100 Doors Runaway Level 7 Solution
Take a hammer on the floor and use a hammer to hit the bell, in accordance with the number of stacks of books on top of the door.
Pressing the bell sequence: high stack of books = high bell
2nd, 3rd, the 1st, 5th, 4th

100 Doors Runaway Level 8 Walkthrough
Change any number 0 based on the instructions at the top of the door, on the left plus 2, and on the right plus 1.

Results in the can as follows:
Left = 2 7 5 10
Right = 3 11 12 8

100 Doors Runaway Level 9 Solution

Place all sizes weight to the left and right of the door, so that the weight of the left and right balanced.
Move weight (2T) from left to right, and move all the weight (3T) on the floor to the left.
Continue to 100 Doors Runaway Level 10 11 12 Solution