Răspuns:
a)
[tex]3 \frac{1}{5 } \times 8 \frac{3}{4} = \frac{16}{5} \times \frac{27}{4} = \frac{4\times 27}{5} = \\ \frac{108}{5} = 21 \frac{3}{5} [/tex]
b)
[tex]1 \frac{2}{7} \times 1 \frac{13}{15} = \frac{9}{7} \times \frac{28}{15} = \frac{12}{5} \\ = 2 \frac{2}{5} [/tex]
c)
[tex]5 \frac{5}{8} \times 1 \frac{7}{25} = \frac{5}{8} \times \frac{32}{25} = \frac{4}{5} [/tex]
d)
[tex]3 \frac{3}{13} \times 2 \frac{11}{14} = \frac{42}{13} \times \frac{39}{14} = \frac{9}{1} [/tex]
