19/21 - 2/7 = 19/21 - 6/21 = 13/21
2 minus -19 is 21.
-1/19.
16/21 minus two equals -1 5/21
It is: 3/4 minus 2/9 = 19/36
It is: 2/7 minus 5/8 is = -19/56
2/3 - 4/7 = 14/21 - 12/21 = 2/21
1 over 21. 5/7 - 2/3 = 15/21 - 14/21 = 1/21
6/7 - 2/3 = 18/21 - 14/21 = 4/21
6/7 - 2/3 = 18/21 - 14/21 = 4/21
21/25 − 2/5 = 11/25
-21.. (or minus 21)
87/21 - 73/21 = 14/21 = 2/3