292. Выполните действия.

1) 7 7/9 - 4 1/12 + 2 3/4 = 7 28/36 - 4 3/36 + 2 27/36 = 5 52/36 = 6 16/36 = 6 4/9. Ответ: 6 4/9. 2) 17 2/3 - 6 1/36 + 4 3/8 = 17 24/36 - 6 1/36 + 4 27/36 = 15 50/36 = 16 14/36 = 16 7/18. Ответ: 16 7/18. 3) 10 9/16 - (3 11/12 + 4 4/9) = 10 144/144 - (3 132/144 + 4 64/144) = 10 144/144 - 7 196/144 = 3 92/144 = 3 46/72 = 3 23/36. Ответ: 3 23/36. 4) (20 - 7 23/36) - (14 4/27 - 6 1/2) = (20 36/36 - 7 23/36) - (14 108/216 - 6 108/216) = (12 13/36) - (8 0/216) = 4 13/36. Ответ: 4 13/36.