6/20 can be reduced to 3/10 and is equivalent to 0.3 in decimal form.
375/100 is equivalent to 15/4, which in decimal form is 3.75.
Expressed as a fraction, 21/32 can't be simplified.Expressed as a decimal, it's equivalent to 0.65625 .
This is a decimal fraction, so there is not another simpler decimal form. Its equivalent, in rational form, is 85/100 which simplifies to 17/20.
121 is already in the simplest form. It can be written as 0.047619 in decimal form (rounded to 6 decimal places).
7/8, or 0.875, is in its simplest form.
It is already in its simplest form, or it can be written as the decimal 0.03.
85/99 is the simplest form as a fraction. In decimal form it is 0.858685/99 is the simplest form.
15/28 is the simplest form and, by definition, the simplest form must be equivalent to other forms of the ratio.
31/5 is aleady in its simplest form and as a decimal it is 6.2
2/15 is the simplest form. in decimal notation it is 0.133333
3 over 5 in its simplest form * * * * * True, but that is not a decimal! As a decimal fraction, it is 0.6