3. Вычислите: 1) 3/4 + 2,64; 2) 9/17 : 3/34; 3) 1,6 : 4,8.

1. \(\frac{3}{4}+2.64=0.75+2.64=3.39\).
2. \(\frac{9}{17}:\frac{3}{34}=\frac{9}{17}\cdot\frac{34}{3}=6\).
3. \(1.6:4.8=\frac{16}{48}=\frac{1}{3}\).

Ответ: 1) 3,39; 2) 6; 3) 1/3.