(1 3/4 - 2 5/6) : 1,3 =
= (1 9/12 - 2 10/12) : 13/10 =
= -1 1/12 * 10/13 =
= -13/12 * 10/13 =
= -5/6
ответ: -5/6
(1 3/4 - 2 5/6) : 1,3 =
= (1 9/12 - 2 10/12) : 13/10 =
= -1 1/12 * 10/13 =
= -13/12 * 10/13 =
= -5/6
ответ: -5/6