Răspuns:
[tex]a) \: \frac{4}{5} \times 1 \frac{1}{4} \times \frac{2}{3} = \frac{4}{5} \times \frac{1 \times 4 + 1}{4} \times \frac{2}{ 3} = \frac{4}{5} \times \frac{5}{4} \times \frac{2}{3} = \frac{20}{20} \times \frac{2}{ 3} = 1 \times \frac{2}{ 3} = \frac{2}{3} \\ b) \: 4 \frac{1}{3} \times (1 \frac{2}{3} \times \frac{3}{5} ) = \frac{13}{3} \times ( \frac{5}{3} \times \frac{3}{5} ) = \frac{13}{3} \times \frac{15}{15} = \frac{13}{3} \\ c) \: 2 \frac{3}{7} \times \frac{7}{17} \times 1 \frac{1}{8} = \frac{17}{7} \times \frac{7}{17} \times \frac{9}{8} = \frac{119}{119} \times \frac{9}{8} = \frac{9}{8} [/tex]
