((15/28-11/36)×21/29+6 6/7÷16/21)÷16 1/2
1 ) 15\28 - 11\36 = 58\252 = 29\126 2 ) 29\126 * 21\29 = 1\6 3 ) 6 6\7 : 16\21 = 48\7 * 21\16 = 9 4 ) 1\6 + 9 = 1\6 + 8 6\6 = 8 7\6 5 ) 8 7\6 : 16 1\2 = 55\6 : 33\2 = 55\6 * 2\33 = 55\99 = 5\9