13/36
Х = 1 - 7/24 - (7/24 + 1/18) =
= 1 - 7/24 - 7/24 - 1/18 = 1 - 7/12 - 1/18 =
= 1 - 21/36 - 2/36 = 36/36 - 23/36 = 13/36
13/36
Х = 1 - 7/24 - (7/24 + 1/18) =
= 1 - 7/24 - 7/24 - 1/18 = 1 - 7/12 - 1/18 =
= 1 - 21/36 - 2/36 = 36/36 - 23/36 = 13/36