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amplificati cu 3 factiile:2/7,3/10,4/9,6/13,10/21

Răspuns :

2/7=6/21
3/10=9/30
4/9=12/27
6/13=18/39
10/21=30/63
[tex]1) \frac{6}{21} \\ \\ 2) \frac{9}{30} \\ \\ 3) \frac{12}{27} \\ \\ 4) \frac{18}{39} \\ \\ 5) \frac{30}{63} [/tex]