b) 250+60:(50-30)x50=250+60:20x50=250+150=400
c) 11x(110-80):3=11x30:3=110
d) (111+400-40):3=471:3=157
e) 100-1x[100+100:10-(100-3)=100-1x(100+100: 10-97)=100-1x(100+10-97) =100-1x13=100-13=87
f) 50+12x[214-240:(16-10)] -1000=50+12x(214-240: 6)-1000=50+12x(214-40) -1000=50+12x174-1000=50+2088-1000=1138
Sper ca te-am ajutat ;)