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calculati ef.mai intai simplificarile;
28/24+21/18=
22/18+40/45=


Răspuns :

14/12 + 7/6 = 7/6 + 7/6 = 14/6 = 7/3
11/9 + 8/9 = 19/9
28/24+21/18=7/6+7/6=14/6=7/3
22/18+40/45=11/9+8/9=19/9