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Calculati:
2/3 + 3/4 + 4/5 + 5/6 = ?
Ma puteți ajuta!?
Dau coroana!


Răspuns :

Numitor comun 60
(2x20+3x15+4x12+5x10)/60=
(40+45+48+50)/60=
183/60

2/3 + 3/4 = 8/12 + 9/12 = 17/12

4/5 + 5/6 = 24/30 + 25/30 = 49/30

17/12 + 49/30 = 85/60 + 98/60 = 183/60

Succes!