calculeaza: 180:2+[(50×2:10+90)+10]-25×4=

Răspuns :

=90+[(100:10+90)+10]-100
=90+[(10+90)+10]-100
=90+(100+10)-100
=90+110-100
=100
90+[(100:10+90)+10]-100=90+[10+90+10]-100=9100=90+110-100=200-100=100