X 0 6 4 8 July 8, 2019 16 32 64 128 X 0 2 4 6 8 6 4 x 8 0 5 4 0 x 6 8 exterior door 4 0 x 6 8 door 10 12 8 x 0 6 4 1 6 0 4 x 5 8 1 2 X x 6 )- 4 5x 8 )= 0 0 4 2 6 4 8 x 7 0 x = 4