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calculați 1supra3din 3supra7


Răspuns :

1/3 x 3/7 = 3/21 = 1/7

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[tex] \frac{1}{3} din \: \frac{3}{7} = \frac{1}{3} \times \frac{3}{7} = \frac{3}{21} simlificam \: cu \: 3 \: = \frac{1}{7} [/tex]

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