Y = 33 23\45 - 12 13\45 - 5 17 \45 =
( 33 - 12 - 5 ) = 16 - целых
( 23 - 13 - 17 )\45 = - 7 \45 =
16 = 15 целых 45\45 - 7\45 = 15 38 \45
