7-9/11-4 8/11 дроби пожалуйста
7 - 9/11 - 4 8 /11 = 1 5/11 1) 7 -9/11 = 6 2/11 2) 6 2/11 - 4 8/11 = (5-4) - (13/11-8/11)= 1 5/11 или 7 - 9/11 - 4 8/11 = (7-4) - (9/11+8/11)= 3 - 1 6/11= = 2- 6/11= 1 5/11
7 - 9/11 - 4 8/11 = 7/1 - 9/11 - 52/11 = 77/11 - 9/11 - 52/11 = 16/11 = 1 5/11