Представте число в виде дроби с указанным знаменателем 12: 23/69,13/78,29/58,3/4,45/54,11/33,19/38,35/42,56/96

1) 23/69 = 1/3 = 4*1/4*3 = 4/12, 2) 13/78 = 1/6 = 2*1/2*6 = 2/12, 3) 29/58 = 1/2 = 6*1/2*6 = 6/12, 4) 3/4 = 3*3/3*4 = 9/12, 5) 45/54= 5*9/6*9 = 2*5/2*6 = 10/12, 6) 11/33= 1/3 = 4*1/3*4 = 4/12, 7) 19/38= 1/2 = 6*1/2*6 = 6/12, 8) 35/42= 5*7/6*7 = 2*5/2*6 = 10/12, 9) 56/96= 7*8/12*8 = 7/12.