No.
40 over 12 reduced to its lowest term = 10/3 or 31/3
31/40 = 31 ÷ 40 = 0.775
169 over 31 reduced to its lowest terms is the mixed number 514/31
31/100 cannot be reduced further.
The reduced fraction for 40 over 64 is 5/8
The reduced fraction for 40 over 100 is 2/5
21/40 cannot be reduced.
It is: 31/40 = 0.775
it can be reduced to 4 over 3
The fraction 13/40 cannot be reduced any more.
31/40 = 0.775
31/51 is in its simplest form.