Ответ Автор - y0uknow Ответ:2.3-d=4.6d=4.6-2.3d=2.31 3/7-y=1/7y=1 3/7-1/7y=1 2/7f-34.8=6.1f=34.8+6.1f=40.94.2-a=1.1a=4.2- 1.1а=3.1