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1999+{450÷5+15÷3×[462-(50:25+4)×65]:150}=

Răspuns :

1999+{450÷5+15÷3×[462-(50:25+4)×65]:150}
=1999+
{450÷5+15÷3×[462-6×65]:150}
=
1999+{450÷5+15÷3×72:150}
=
1999+{90+15÷3×72:150}
=1999+90+2,4
=2089+2,4
=2091,4