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16-3·{[21-2·(36-27)÷3]÷(32-29)-1}

Răspuns :

16-3•{[21-2•9:3]:3-1}=
=16-3•{[21-18:3]:3-1}=
=16-3•{[21-6]:3-1}=
=16-3•{15:3-2}=
=16-3•{5-2}=
=16-3•3=
=16-9=
=7