a)77:(-11)+15=-7+15=8
b)-13+10:(-2)=-13-5=-18
c)-100:(-25)+7×(-3)=4-21=-17
d)34-96:(-6)=34+16=50
e)-240:(-12)+500:25-153:(-3)=20+20+51=
=40+51=91
f)-14+{13-6×[20-7×(-3)]}:(-233)=
=-14+{13-6×(20+21)}:(-233)=
=-14+(13-6×41): (-233)=
=-14+(-233):(-233)=-14+1=-13
Sper ca te-am ajutat !