в) (4 + 5 1/6) * (3 2/3 - 13/33) = 30
1) 4 + 5 1/6 = 9 1/6
2) 3 2/3 - 13/33 = 11/3 - 13/33 = 121/33 - 13/33 = 108/33 = 3 9/33 = 3 3/11
3) 9 1/6 * 3 3/11 = 55/6 * 36/11 = 36/6 = 5 * 6 = 30
г) 6 5/12 * 4/11 - 11 1/4 * 1/9 = 1 1/12
1) 6 5/12 * 4/11 = 77/12 * 4/11 = 7/3 = 2 1/3
2) 11 1/4 * 1/9 = 45/4 * 1/9 = 5/4 = 1 1/4
3) 2 1/3 - 1 1/4 = 2 4/12 - 1 3/12 = 1 1/12