2 5\12+3+1 19\20. помогите решить
1)2 5/12 + 3 = 29/12 + 3/1 =(29 *1 + 3 *12)/12 = 29/12 + 36/12 = 65/12 = 5 5/12 2)5 5/12 + 1 19/20 = 65/12 + 39/20 =(65*5 +39 * 3)/60 = 325/60+117/60 = 442/60 = 221/30 = 7 11/30 ответ 7 11/30
2 5\12+3+ 1 19\20= 2 25\60+3+1 57\60= 3 82\60+3=6 82\60=7 22\60=7 11\30