выпрлните действия 2/11+5/11, 1/8+4/8,6/15-4/15,11/25-3/25,3/9+2/9-4/9,5/18+12/18-9/18,12/19-1/19-5/19,25/23-10/23+3/23

2/11+5/11=7/111/8+4/8=5/86/15-4/15=2/1511/25-3/25=8/253/9+2/9-4/9=1/95/18+12/18-9/18=8/18=4/912/19-1/19-5/19=6/1925/23-10/23+3/23=18/23

7/11,5/8,2/15,8/25,1/9,8/18=4/9,6/19,18/23