1/4 - (1 - 11/12) = 1/4 - (1 - 11/12)= 1/4 - 1 + 11/12= 3/12 - 12/12 + 11/12= (3 - 12 + 11)/12= 2/12= 1/6
2 - (13 - 5/22) = 2 - 13 + 5/22= -11 + 5/22= -(242/22) + 5/22= (-242 + 5) / 22= -237/22
Итак, ответ: 1/6, -237/22
1/4 - (1 - 11/12) = 1/4 - (1 - 11/12)
= 1/4 - 1 + 11/12
= 3/12 - 12/12 + 11/12
= (3 - 12 + 11)/12
= 2/12
= 1/6
2 - (13 - 5/22) = 2 - 13 + 5/22
= -11 + 5/22
= -(242/22) + 5/22
= (-242 + 5) / 22
= -237/22
Итак, ответ: 1/6, -237/22