4. Вычислите: 1) |-3,2| + |-1,9| – |2,25|; 2) \(1\frac{17}{48}:1\frac{5}{6}\).

1) |-3,2| + |-1,9| – |2,25| = 3,2 + 1,9 - 2,25 = 5,1 - 2,25 = **2,85** 2) \(1\frac{17}{48}:1\frac{5}{6}\) = \(\frac{65}{48}:\frac{11}{6}\) = \(\frac{65}{48} \cdot \frac{6}{11}\) = \(\frac{65 \cdot 6}{48 \cdot 11}\) = \(\frac{65 \cdot 1}{8 \cdot 11}\) = \(\frac{65}{88}\) **Ответ:** \(\frac{65}{88}\)