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a fost răspuns

(13/33+17/45)-(5/36-1/27)

Răspuns :

(13/33+17/45)-(5/36-1/27)= (aduci la acelas numitor comun in paranteze)
(195/495+187/495)-(15/108-4/108)=
382/495-11/108=
4584/5940-605/5940=
3979/5940



Aduci la acelasi numitor comun (195/495+187/495)-(15/108)=382/495-11/108=4584/5940-605/5940=3979/5940