Вычесть (120-70)÷10+186= 628-4000÷100+9= (450÷5+80)÷10= 580-270÷(900÷100)=
1) 191 2) 597 3) 17 4) 550
(120-17):10+186=191 628-4000:100+9=597 (450:5+80):10=17 580-270:(900:100)=550