Выполните действия : 4 1/9 - 1 2/9 × 2 3/12
4 1/9 - 1 2/9 * 2 3/12 = 1 целая 13/36 1) 1 2/9 * 2 3/12 = 11/9 * 27/12 = (11*3)/(1*12) = 33/12 = 2 9/12 2) 4 1/9 - 2 9/12 = 4 4/36 - 2 27/36 = 3 40/36 - 2 27/36 = 1 13/36
1)1 2/9 × 2 3/12 = 11/9 × 9/4 = 11/4 = 2 3/4 2) 4 1/9 - 2 3/4 = 37/9 - 11/4 =(37 × 4 - 11 × 9)/36 = 148/36 - 99/36 = 49/36 = 1 13/36 ОТВЕТ : 1 13/36