Explicație pas cu pas:
[tex]a) \: \frac{1}{3} \times \frac{3}{7} = \frac{1}{7} \\ b) \: \frac{3}{4} \times \frac{4}{3} = 1 \\ c) \: \frac{7}{5} \times \frac{15}{19} = \frac{21}{19} [/tex]
[tex]d) \: \frac{5}{12} \times \frac{18}{5} = \frac{3}{2} \\ e) \frac{9}{11} \times \frac{22}{27} = \frac{2}{3} \\ f) \: \frac{2}{5} \times \frac{45}{7} = 2 \times \frac{9}{7} = \frac{18}{7} [/tex]
[tex]g) \: \frac{25}{11} \times \frac{11}{45} = \frac{5}{9} \\ h) \: \frac{9}{5} \times \frac{55}{27} = \frac{11}{3} [/tex]
