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va rog frumos urgent!!! 1 si 2

Va Rog Frumos Urgent 1 Si 2 class=

Răspuns :

7/9=6/9+1/9
8/12=1/12+7/12
10/4=1/4+9/4
3/4=5/4-2/4
6/2=7/2-1/2
2/7=3/7-1/7