Răspuns:
[tex]2\frac{1}{7} *1\frac{1}{5} -\frac{1}{21} :\frac{1}{3} = \frac{2*7+1}{7} * \frac{1*5+1}{5} -\frac{1}{21} * 3 = \frac{15}{7} * \frac{6}{5} -\frac{1}{7} =\frac{90}{35} - \frac{7}{35} =\frac{83}{35}[/tex]
Sper ca am rezolvat corect! Succes la teme! Coroana?
