А)3 4/7 - 2 3/5 = 25/7 - 13/5 = 34/7= 4 6/7
Б) 2 3/5 * 1 4/21 = 13/5 * 25/21 = 65/21 = 3 2/21
В) 13/16 * 32 = 26/1 = 26
А)3 4/7 - 2 3/5 = 25/7 - 13/5 = 34/7= 4 6/7
Б) 2 3/5 * 1 4/21 = 13/5 * 25/21 = 65/21 = 3 2/21
В) 13/16 * 32 = 26/1 = 26