Пж пж СРОЧНА!!! ааааааа пж пж
А) 7/15 * 30/49 = (7 * 30) / (15*49) = (1 *2)/ (1 * 7) = 2/7 б) 13/15 / 2/15 = (13 * 15) / (15 * 2) = 13/2 в) 4 * 2 1/3 = 4/1 * 4/3 = (4 * 7) /(1 * 3) = 28/3 = 9 1/3 г) 5 4/5 / 1/5 = 29/5 / 1/5 = (29 * 5) /(5 * 1) = 29/1 = 29