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Răspuns :

[tex]\dfrac{7}{15}\cdot 3\dfrac{1}{8}:\dfrac{7}{12}=\dfrac{7}{15}\cdot \dfrac{3\cdot 8+1}{8}\cdot \dfrac{12}{7}=\dfrac{7}{15}\cdot \dfrac{25}{8}\cdot \dfrac{12}{7}=\boxed{\dfrac{5}{2}}[/tex]