Пошаговое объяснение:
7/12*4= 7/12*4/1=28/12=7/3
11/40*4=11/40*4/1=44/40=11/10=1 1/10=1,1
18/25*4=18/25*4/1=72/25=2 22/25
111/160*4=111/160*4/1=444/160=111/30=2 31/40
19/72*4=19/72*4/1=76/72=19/18=1 1/18
151/220*4=151/220*4/1=604/220=151/55=2 41/55
109/440*4=109/440*4/1=436/440=109/110
901/1001*4=901/1001*4/1=3604/1001=3 601/1001
Пошаговое объяснение:
7/12*4= 7/12*4/1=28/12=7/3
11/40*4=11/40*4/1=44/40=11/10=1 1/10=1,1
18/25*4=18/25*4/1=72/25=2 22/25
111/160*4=111/160*4/1=444/160=111/30=2 31/40
19/72*4=19/72*4/1=76/72=19/18=1 1/18
151/220*4=151/220*4/1=604/220=151/55=2 41/55
109/440*4=109/440*4/1=436/440=109/110
901/1001*4=901/1001*4/1=3604/1001=3 601/1001