calculează
a)
[tex] \frac{4}{5} \times \frac{15}{8} = \\ [/tex]b)
[tex] \frac{7}{10} \times \frac{20}{21} = [/tex]
c)
[tex] \frac{32}{48} \times \frac{16}{32} = [/tex]
d)
[tex] \frac{11}{12} \times \frac{24}{33 } = [/tex]
e)
[tex] \frac{33}{44} \times \frac{77}{88} \times \frac{55}{22} = [/tex]
f)
[tex] \frac{1 \: 313}{3 \: 131} \times \frac{31}{13} = [/tex]




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