Răspuns :
10+13+(23+4):3-[64:8-15:5]:5=
=10+13+(23+4):3-5:5=
=10+13+27:3-5:5=
=10+13+9-1=
=23+9-1=
=32-1=
=31
=10+13+(23+4):3-5:5=
=10+13+27:3-5:5=
=10+13+9-1=
=23+9-1=
=32-1=
=31