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Adu la același numitor fracțiile urmatoare. a). 36/7,13/7. b). 7/12,13/6. c). 15/4,9/16. d). 3/4,5/12 e). 13/11,7/9. f). 32/12,13/14. g). 18/42,77/35. h). 2/7,3/8,5/14.​