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Cum se aduna fractia 2/5 si 3/10?Explicati va rog

Răspuns :


[tex] \frac{2}{5} + \frac{3}{10} = \frac{2}{5} \times 2 + \frac{3}{10} = \frac{4}{10} + \frac{3}{10} = \frac{7}{10} [/tex]