Explicație pas cu pas:
a)
[tex]\frac{a}{b} : \frac{c}{d} = \Big( \frac{1}{3} \Big) : \Big( \frac{5}{3} \Big) = \frac{1}{ \not3} \cdot \frac{ \not3}{5} = \bf \frac{1}{5} \\ [/tex]
b)
[tex]\frac{a}{b} = 2 \frac{1}{3} = \frac{2 \cdot 3 + 1}{3} = \frac{7}{3} \\ [/tex]
[tex]\frac{c}{d} = 1 \frac{1}{2} = \frac{1 \cdot 2 + 1}{2} = \frac{3}{2} \\ [/tex]
[tex]\frac{a}{b} : \frac{c}{d} = \Big( \frac{7}{3} \Big) : \Big( \frac{3}{2} \Big) = \frac{7}{3} \cdot \frac{2}{3} = \bf \frac{14}{9} \\ [/tex]
