Выполните действия////....
а) 3/4 * 5/7 = 15/28
б) 1/8 * 3/4 = 3/32
в) 4/7 * 5/6 = 20/42 = 10/21
г) 2/5 * 7/11 = 14/55
д) 1/2 * 4/9 = 4/18 = 2/9
е) 11/12 * 8/9 = 88/108 = 22/27
ж) 2/5 * 3/2 = 3/5
з) 11/15 * 3/5 = 11/5 * 1/5 = 11/25
и) 15/16 * 5/9 = 75/45 = 15/9 = 1целая6/9