2.(49-54:6+27:9)+72:8-16=

2 * (49 - 54 : 6 + 27 : 9) + 72 : 8 - 16 = 2 * (49 - 9 + 3) + 9 - 16 = 2 * (40 + 3) + 9 - 16 = 2 * 43 + 9 - 16 = 86 + 9 - 16 = 95 - 16 = 79

Ответ: 79