1.
21 over 25 is 84%
It is 21/10 minus 1/10 = 20/10 or 2
0.84 which is also 84%
No. A factored form of one can not be used here.
-21.. (or minus 21)
Yes. 15/21 = 5/7. 5/7 is in simplest form.
21 minus 0.5 is 20.5
63 minus 21 is 42.
It is 21 minus 100 = -79
21 minus -5 is 26.
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).