Răspuns :
[tex]\it \dfrac{^{10)}2}{\ \ 3}=\dfrac{x}{30}\Rightarrow \dfrac{20}{30}=\dfrac{x}{30} \Rightarrow x=20\\ \\ \\ Propor\c{\it t}ia\ \ devine:\\ \\ \\ \dfrac{2}{3}=\dfrac{20}{30}[/tex]
[tex]\it \dfrac{^{10)}2}{\ \ 3}=\dfrac{x}{30}\Rightarrow \dfrac{20}{30}=\dfrac{x}{30} \Rightarrow x=20\\ \\ \\ Propor\c{\it t}ia\ \ devine:\\ \\ \\ \dfrac{2}{3}=\dfrac{20}{30}[/tex]