Yes.
30
46/100 = 13/25
10/100 = 1/10
32/100 reduces to 8/25
You cannot. 153/100 is in its lowest form.
7 over 10
86/100 = 43/50 which is as far as you can reduce it.
83 is prime, so, no.
Yes, to 2/5
The fraction 3/100 cannot be reduced any more.
The fraction 29/100 cannot be reduced any more.