А) 6+6/11 * 3/4 : 2+2/5 * 2+1/5 = 3+64/85
1) 72/11 * 3/4 = 39/11 = 3+6/11
2) 3+6/11 : 2+2/5 = 39/11 * 5/12 = 195/135 = 1+12/17
3) 1+12/17 * 2+1/5 = 29/17 * 11/5 = 319/85 = 3+64/85
б) 9 : 6+1/4 * 2+1/2 : 3/5 = 6
1) 9 * 4/25 = 36/25 = 1+11/25
2) 1+11/25 * 2+1/2 = 36/25 * 5/2 = 18/5 = 3+3/5
3) 3+3/5 : 3/5 = 18/5 * 5/3 = 6
в) 9+1/3 : 7/8 * 9/16 : 14/27 = 11+4/7
1) 28/3 * 8/7 = 32/3 = 10+2/3
2) 10+2/3 * 9/16 = 32/3 * 9/16 = 6
3) 6 : 14/27 = 6/1 * 27/14 = 81/7 = 11+4/7
г) 1+5/6 : 2+1/3 * 3+3/4 * 4+1/5 = 12+3/8
1) 11/6 * 3/7 = 11/14
2) 11/14 * 3+3/4 = 11/14 * 15/4 = 165/56 = 2+53/56
3) 2+53/56 * 4+1/5 = 165/56 * 21/5 = 99/8 = 12+3/8
не, я разучился считать. извиняйте, если что.