2) \( 2 \frac{1}{8} + \frac{3}{16} \) = \( 2 \frac{2}{16} + \frac{3}{16} \) = \( 2 \frac{5}{16} \)

2) \( 2 \frac{1}{8} + \frac{3}{16} = 2 \frac{1 \cdot 2}{8 \cdot 2} + \frac{3}{16} = 2 \frac{2}{16} + \frac{3}{16} = 2 \frac{2+3}{16} = 2 \frac{5}{16} \)