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2/15 +1/35=?
2/3 : 1/6=?


Răspuns :

[tex] \frac{2}{15} + \frac{1}{35} = \frac{14}{105} + \frac{3}{105} = \frac{17}{105} \\ \\ \frac{2}{3} : \frac{1}{6} = \frac{2}{3} * \frac{6}{1} = \frac{12}{3} = 4 [/tex]