[tex] \frac{5}{24} + \frac{1}{12} + \frac{3}{8} = \\ \\ \frac{5}{24} + \frac{1}{12} = \frac{5}{24} + \frac{1 \times 2}{12 \times 2} = \frac{5}{24} + \frac{2}{24} = \frac{5 + 2}{24} = \frac{7}{24} \\ \\ \frac{7}{24} + \frac{3}{8} = \frac{7}{24} + \frac{3 \times 3}{8 \times 3} = \frac{7}{24} + \frac{9}{24} = \frac{7 + 9}{24} = { \frac{16}{24} }^{(8} = \frac{2}{3} [/tex]
