5+ [16 - (9: 0.8+7)]•6 = 4:(1-2) +3.3
5+[16-(11.25+7)]•6=4:(-1)+3.3
5+[16-18.25]•6=-4+3.3
5+2.25•6=-0,7
5+13.5=0.7
18.5=0.7 (Fals)