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suma fractiilor : 3\4+2\4+1este:

Răspuns :

3/4+2/4+1=3/4+2/4+4/4
(3+2+4)/4=9/4=2,25
3/4+2/4+1= numitor comun 4=> amplificam 1 cu 4
3+2+4 / 4=
9/4