Răspuns:
a) -9-(-6)+8=-9+6+8=5
b) -1-(+3)-6=-1-3-6=-10
c)+12-(-9)-2=+12+9-2=21-2=19
d)+6-(-4)+10=6+4+10=20
e) -21-(+17)-(-2)=-21-17+2=-36
f)0-(-8)-(+8)=0+8-8=0
g)+11-(-9)-(+5)=+11+9-5=15
h)4-(+3)+(-7)=4-3+7=8
i)0-(+9)+(-9)=0-9+9=0
j)-6-[(-4)-(-5)]=-6-(-4+5)=-7
k)-4-[(+10)+3]=-4-13=-17
l)-[9-(-9)]-5=-(9+9)-5=-18-5=-23
