complete:
7/11=14/22=11+2+1/22=11/22+2/22+1/22=1/?+1/?+1/?
11/22+1/22+2/22 = 1/2+1/11+1/22
7/11=14/22=11+2+1/22=11/22+2/22+1/22=1/2+1/11+1/22
bonne chance