[tex] \frac{28}{13} + \frac{7}{1} = \frac{28}{13} \times \frac{1}{7} = \frac{28}{91} [/tex]
Răspuns:
[tex]\frac{28}{13}[/tex] [tex]: \frac{7}{1}[/tex] [tex]= \frac{28}{13} ori \frac{1}{7}[/tex] =4/13
