Răspuns :
11+2•[3+(4+5•6):2]:5-13
= 11+2•[3+(4+30):2]:5-13
=11+2•(3+34:2):5-13
=11+2•(3+17):5-13
=11+2•20:5-13
=11+2•4-13
=11+8-13
=19-13
=6
= 11+2•[3+(4+30):2]:5-13
=11+2•(3+34:2):5-13
=11+2•(3+17):5-13
=11+2•20:5-13
=11+2•4-13
=11+8-13
=19-13
=6