Question

выполнение действия. 1)9/20+5/12-17/36. 2) 11/25+5/6-19/24. 3)4/15+7/30+19/15.

Answer 1

9/20 + 5/12 - 17/36 = (81+75-85)/180 = 71/180

11/25 + 5/6 - 19/24 = (264+500-475)/600 = 289/600

4/15 + 7/30 + 19/15 = (8+7+38)/30 = 53/30 = 1 целая 23/30