Explicație pas cu pas:
[tex][tex] a)\frac{7}{30} \times \frac{6}{35} = \frac{5}{5 } = 1 \\ \\ b)3 \frac{1}{3} \times 1 \frac{4}{5} = \frac{10}{3} \times \frac{9}{5} = \frac{3}{2} \\ \\ c) \frac{4}{7} \times \frac{6}{5} \times \frac{7}{8} = \frac{4}{7} \times \frac{2}{5} \times \frac{7}{4} = \frac{4}{7} \times \frac{1}{5} \times \frac{7}{2} = \frac{4}{35} \times \frac{7}{2} = \frac{28}{70} = \frac{14}{35} \\ \\ \\ d)6 \frac{7}{12} \times \frac{4}{129} = 6 \frac{7}{3} \times \frac{1}{129} = \frac{25}{3} \times \frac{1}{129} = \frac{25}{387}
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