7/12=21/36 7/11 - невозможно 7/10 - невозможно 7/9 = 28/36 7/8 - невозможно 7/7 = 36/36 7/6 = 42/36 7/5 невозможно 7/4 = 63/36 7/3 = 84/36 7/2 = 126/36