[tex]\it 2\dfrac{1}{3} = \dfrac{7}{3}
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1\dfrac{3}{7} =\dfrac{10}{7}
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0,5 = \dfrac{1}{2}[/tex]
Proporția devine:
[tex]\it \dfrac{\dfrac{7}{3}}{x}= \dfrac{\dfrac{1}{2}}{\dfrac{10}{7}}[/tex]
[tex]\it x = \dfrac{\dfrac{7}{3}\cdot \dfrac{10}{7}}{\dfrac{1}{2}} = \dfrac{\dfrac{10}{3}}{\dfrac{1}{2}} = \dfrac{10}{3}:\dfrac{1}{2} =\dfrac{10}{3}\cdot\dfrac{2}{1} =\dfrac{20}{3} = 6\dfrac{2}{3} \ .[/tex]