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Calculati fractia:

1/2+{4/5+(3/4-2/3)}=


Răspuns :

1/2+{4/5+(3/4-2/3)}=
1/2+[4/5+(9-8/12)]=
1/2+(4/5+1/12)=
1/2+(48+5/30)=
1/2+53/30=
15+53/30=68/30=24/15
suceees