Răspuns:
9+6*(3+4*3)=9+6*(3+12)=9+6*15=9+90=99
3•3+(3+3)•[3+(3:3+3)•3]=
=9+6•[3+(1+3)•3]=
=9+6•(3+4•3)=
=9+6•(3+12)=
=9+6•15=
=9+90=
=99