3/10=2/10+1/10=1/5+1/10
3/8=2/8+1/8=1/4+1/8
3/7=12/28=7/28+4/28+1/28=1/7+1/4+1/28
6/11=12/22=11/22+1/22=1/2+11/22
3/10=2/10+1/10=1/5+1/10
3/8=2/8+1/8=1/4+1/8
3/7=12/28=7/28+4/28+1/28=1/7+1/4+1/28
6/11=12/22=11/22+1/22=1/2+11/22