490 cannot be simplified further.
42/490 in simplest form is 3/35.
2/5
0.0857
XD is not in the standard form for a Roman numeral, but I would guess its value is 490. It should be written as CDXC
7
42/490 in simplest form is 3/35.
4/90 = 2/45
31/98
2/5
0.0857
XD is not in the standard form for a Roman numeral, but I would guess its value is 490. It should be written as CDXC
It is: 2^1 times 5^1 times 7^2 = 490
Simplest form
7
3/7 is in its simplest form.
490 = 490
It is already in simplest form.