1.
It is 21/10 minus 1/10 = 20/10 or 2
-21.. (or minus 21)
21 minus 0.5 is 20.5
63 minus 21 is 42.
minus 20
-20 negative 20 minus 20
21 minus -5 is 26.
It is 21 minus 100 = -79
Expressed as a mixed number in its simplest form, 6 3/7 - 20/21 = 5 10/21 or five and ten twenty-firsts.
Right now, it is 2013, so if you are 20 years old, you were born in 1992 or 1993. In general, if a person is 20 years old, that means that they were born in the year (this year minus 20) or (this year minus 21).
18/20 + 8/20 - 5/20 = 21/20 or 1 and 1/20
Jan = 23 minus one day for New Years = 22 Feb = 21 March = 21 April = 22 May = 22 minus one for Memorial day = 21 June = 21 July = 23 minus one day for the 4th = 22 Aug = 21 Sept = 22 minus one for Labor Day = 21 Oct = 23 Nov = 20 minus one for Thanksgiving = 19 Dec = 23 minus one for Christmas = 22