9,75:(4 1/2-2/55) 15,96:(9,25+2,04)

1) 9,75 : (4 1/2 - 2/55) = 975/100 : ((4 * 2 + 1)/2 - 2/55) = 39/4 : (9/2 - 2/55) = 39/4 : (495/110 - 4/110) = 39/4 : (495 - 4)/110 = 39/4 : 491/110 = 39/4 * 110/491 = (39 * 110)/(4 * 491) = (39 * 55)/(2 * 491) = 2145/982;

Ответ: 2145/982.

2) 15,96 : (9,25 + 2,04) = 15,96 : 11,29 = 1596/100 : 1129/100 = (1596 * 100)/(100 * 1129) = 1596/1129;

Ответ: 1596/1129.