10/4 - z - 8/16 = 21/2 - z - 1/2 = 2 - z
6/7 minus 2/6 is 11/21
Expressed as a proper fraction in its simplest form, 6/7 - 2/21 = 16/21 (that is, sixteen twenty-firsts). Expressed as a decimal, this is equal to 0.761904 recurring (that is, 0.761904761904...)
1 over 21. 5/7 - 2/3 = 15/21 - 14/21 = 1/21
87/21 - 73/21 = 14/21 = 2/3
10/4 - z - 8/16 = 21/2 - z - 1/2 = 2 - z
19/21 - 2/7 = 19/21 - 6/21 = 13/21
6/7 minus 2/6 is 11/21
Expressed as a proper fraction in its simplest form, 6/7 - 2/21 = 16/21 (that is, sixteen twenty-firsts). Expressed as a decimal, this is equal to 0.761904 recurring (that is, 0.761904761904...)
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
1/2 − 3/16 = 10/32 which simplifies to 5/16
87/21 - 73/21 = 14/21 = 2/3
-21.. (or minus 21)