7 14/15+2 1/15= 9 24/27+12 13/27= 1-12/19= 8-3 6/15= 12-11 6/11= 16 3/13-6 8/13= 13 4/9-2 8/9= 10 7/16-4 12/16= 29 49/53-8 49/53= (20 16/25 +13 9/25)-(23 4/14 +7 13/14)=

9 24/27+12 13/27=21 37/27=22 10/271-12/19= 19/19-12/19=7/198-3 6/15=5-6/15=4 15/15-6/15=4 9/15=4 3/512-11 6/11= 1-6/11= 11/11-6/11=5/1116 3/13-6 8/13=8 3/13-8/13=7 16/13-8/13=7 8/1313 4/9-2 8/9=11 4/9-8/9= 10 13/9-8/9=10 5/910 7/16-4 12/16=6 7/16-12/16=5 23/16-12/16=5 11/1629 49/53- 8 49/53=21(20 16/25+13 9/25)-(23 4/14+7 13/14)=34-30 17/14=34-31 3/14= 33-3/14=32 14/14-3/14= 32 11/14

7 14/15+2 1/15=10 9 24/27+12 13/27=22 1-12/19=7/19 8-3 6/11= 4 5/11 12-11 6/11=5/11 16 3/13-6 8/13=9 6/13