Răspuns :
Răspuns:
77+77:[77x(77+1):77-77:77]=
=77+77:(77x78:77-77:77)=
=77+77:(6006:77-77:77)=
=77+77:(78-1)=
=77+77:77=
=77+1=
=78.
Explicație pas cu pas:
Răspuns:
77+77:[77x(77+77:77):77-77:77]=
77+77:[77x(77+1):77-1]
77+77:(77x78:77-1]
77+77:(6006:77-1)
77+77:(78-1)
77+77:77
77+1
78