⅔-4/9=2/9. 2/9*⅜=1/12
⅜:7/32=12/7. 2/7+12/7=14/7=2
7/9+11/18=25/18. 5/9:25/18=9/20
4/7:16/21=¾. 1-¾=¼.
⅔-4/9=2/9. 2/9*⅜=1/12
⅜:7/32=12/7. 2/7+12/7=14/7=2
7/9+11/18=25/18. 5/9:25/18=9/20
4/7:16/21=¾. 1-¾=¼.