найдите произведение 1 7/33*1 7/15, 5 5/6*2 4/7,1 5/12*24

1. 1 7/33* 1 7/15=40/33*22/15=880/495=1 385/495(:5)=1 77/97 2. 5 5/6* 2 4/7=35/6*18*7=630/42=15 3. 1 5/12*24=17/12*24=408/12=34