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Va rog repede!Dau coroana!!

Va Rog RepedeDau Coroana class=

Răspuns :

1/5×2/3=2/15
4/7×5/3=20/21
5/9×2/7=10/63
5×3/4=15/4
2/5×3=6/5
4/3×1/4=4/12=1/3
5/2×4/2=20/8=5/2