а) 2/8 = 1/4; 8/40 = 1/5; 10/12 = 5/6; 7/28 = 1/4; 6/12 = 1/2.
б) 9/18 = 1/2; 2/4 = 1/2; 7/35 = 1/5; 12/16 = 3/4; 8/32 = 1/4.
в) 5/30 = 1/6; 2/32 = 1/16; 8/44 = 2/11; = 6/84 = 1/14; 3/45 = 1/15.
г) 3/42 = 1/14; 6/52 = 3/26; 2/16 = 1/8; 10/45 = 2/9; 4/24 = 1/6.
а) 2/8 = 1/4; 8/40 = 1/5; 10/12 = 5/6; 7/28 = 1/4; 6/12 = 1/2.
б) 9/18 = 1/2; 2/4 = 1/2; 7/35 = 1/5; 12/16 = 3/4; 8/32 = 1/4.
в) 5/30 = 1/6; 2/32 = 1/16; 8/44 = 2/11; = 6/84 = 1/14; 3/45 = 1/15.
г) 3/42 = 1/14; 6/52 = 3/26; 2/16 = 1/8; 10/45 = 2/9; 4/24 = 1/6.