2. Вычислите: 1) 3 \(\cdot\) 2 \(\frac{2}{13}\) 2) 12 \(\frac{5}{6}\) 3) 7 \(\cdot\) \(\frac{15}{28}\) 4) 27 \(\cdot\) 18

2. Вычислим:

1. \( 3 \cdot 2 \frac{2}{13} = 3 \cdot \frac{2 \cdot 13 + 2}{13} = 3 \cdot \frac{26 + 2}{13} = 3 \cdot \frac{28}{13} = \frac{3 \cdot 28}{13} = \frac{84}{13} = 6\frac{6}{13} \)
2. \( 12 \frac{5}{6} = \frac{12 \cdot 6 + 5}{6} = \frac{72 + 5}{6} = \frac{77}{6} = 12\frac{5}{6} \)
3. \( 7 \cdot \frac{15}{28} = \frac{7 \cdot 15}{28} = \frac{1 \cdot 15}{4} = \frac{15}{4} = 3\frac{3}{4} \)
4. \( 27 \cdot 18 = 486 \)