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ajuuuutor vaaa rog repeede dau coroana

Ajuuuutor Vaaa Rog Repeede Dau Coroana class=

Răspuns :

3/10+3/10=6/10
3/10+5/10=8/10
3/10+6/10=9/10
3/10+7/10=10/10
a)6/10-3/10=3/10
8/10-3/10=5/10=1/5
9/10-3/10=6/10=3/5
10/10-3/10=7/10

b)5/9+2/9=7/9
7/9+2/9=9/9=1
3/9+2/9=5/9
6/9+2/9=8/9