Question

aflaţi trei proporţii derivate cu aceeaşi termeni,pornind de la proporţia 3/5=9/15​

Answer 1

$\it I)\ Schimb\breve am\ \ mezii\ \ \^{i}ntre\ \ ei:\\ \\ \dfrac{3}{5}= \dfrac{9}{15}\ \Rightarrow \dfrac{3}{9} = \dfrac{5}{15}$

$\it II)\ \ Schimb\breve am\ \ extremii\ \ \^{i}ntre\ \ ei:\ \ \ \ \dfrac{3}{5}= \dfrac{9}{15}\ \Rightarrow \dfrac{15}{5} = \dfrac{9}{3}$

$\it\ III)\ \ Invers\breve am\ rapoartele:\ \ \dfrac{3}{5}= \dfrac{9}{15} \Rightarrow\ \dfrac{5}{3}= \dfrac{15}{9}$