Question

выполнить действие а)б)г)

Answer 1

а)8/9 - 5/12 = 32/36 - 15/36 = 17/36;
б)7/15 + 7/12 = 28/60 + 35/60 = 63/60 = 1 1/20;
г)11/42 - 5/28 = 22/84 - 15/84 = 7/84 = 1/12.