(2 3/4: 1 1/10 + 3 1/3) : 5/4 ----------------------------------- =? 2 1/2 - 1 1/3

(2 3/4 : 1 1/10 + 3 1/3) : 5/4 ---------------------------------- = 2 1/2 - 1 1/3 (11/4 : 11/10 + 3 1/3) : 5/4 ---------------------------------- = 2 3/6 - 1 2/6 (11/4 * 10/11 + 3 1/3) : 5/4 ---------------------------------- = 1 1/6 (10/4 + 3 1/3) : 5/4 ----------------------------- = 1 1/6 (2 2/4 + 3 1/3) : 5/4 ----------------------------- = 1 1/6 (2 1/2 + 3 1/3) : 5/4 ----------------------------- = 1 1/6 (2 3/6 + 3 2/6) : 5/4 ----------------------------- = 1 1/6 5 5/6 : 5/4 ------------------ = 7/6 35/6 * 4/5 ------------------ = 7/6 7 * 2/ 3 ------------- = 7/6 14/3 ------- = 7/6 14/3 * 6/7= 2*2= 4