a) 1,325 - 2,41

1. Convert decimals to fractions: 1.325 = 1325/1000 = 53/40, 2.41 = 241/100.
2. Rewrite the expression: 53/40 - 241/100.
3. Find a common denominator (200) and subtract: (265 - 482) / 200 = -217/200.