1) 2 15/88 + 4/33 = 191/88 + 4/33 = (191 * 3 + 4 * 8)/264 = (573 + 32)/264 = 605/264 = 2 77/264; 2) 2 77/264 : 12 2/9 = 605/264 * 9/110 = 11/88 * 3/2 = 33/176; 3) 0,3275 - 33/176 = 0,3275 - 0,1875 = 0,14; 4) 0,14 : 12 2/9 = 14/100 : 110/9 = 7/50 * 9/110 = 63/5500; 5) 13 - 0,416 = 12,584; 6) 63/5500 : 0,07 = 63/5500 : 7/100 = 63/5500 * 100/7 = 9/55; 7) 9/55 : 12,584 = 9/55 : 12 584/1000 = 9/55 * 1000/12584 = 9/11 * 25/1573 = 225/17303; 8) 225/17303 : 6,05 = 225/17303 : 6 5/100 = 225/17303 * 100/605 = 45/17303 * 100/121 = 4500/2093663 = 0,0021; 9) 0,0021 + 1,92 = 1,9221. Ответ: 1,9221.