а) 1/4 = 3/12, 1/3 = 4/12б) 5/6 = 20/24, 7/8 = 21/24в) 1/2 = 10/20, 4/5 = 16/20г) 5/11 = 60/132, 4/33 = 16/132д) 1/2 = 6/12, 1/3 = 4/12, 1/5 = 2/10е) 2/15 = 8/60, 7/20 = 21/60, 4/25 = 2/10ж) 1/4 = 15/60, 1/6 = 10/60, 7/15 = 28/60, 101/120з) 1/4 = 15/60, 5/6 = 50/60, 7/30 = 14/60, 11/45 = 20/90
а) 1/4 = 3/12, 1/3 = 4/12
б) 5/6 = 20/24, 7/8 = 21/24
в) 1/2 = 10/20, 4/5 = 16/20
г) 5/11 = 60/132, 4/33 = 16/132
д) 1/2 = 6/12, 1/3 = 4/12, 1/5 = 2/10
е) 2/15 = 8/60, 7/20 = 21/60, 4/25 = 2/10
ж) 1/4 = 15/60, 1/6 = 10/60, 7/15 = 28/60, 101/120
з) 1/4 = 15/60, 5/6 = 50/60, 7/30 = 14/60, 11/45 = 20/90