6) 25 - (3 + 2) + 1

6) \(25 - (3 + 2 \frac{1}{5}) + 1 \frac{1}{4}\) \\ \(25 - (3 + \frac{11}{5}) + \frac{5}{4}\) \\ \(25 - (3 + 2.2) + 1.25\) \\ \(25 - 5.2 + 1.25\) \\ \(19.8 + 1.25\) \\ \(21.05\)