a )-9-(-6)+8= -9 + 6 + 8 = 5
b)+6-(-4)+10=
6 + 4 + 10 =20
c) +12-(-9)-2=
12 + 9 -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 = 4- 10 = - 6
i) 0-(+9)+(-9)=
0 - 9 -9= -18
j)-6-[(-4)-(-5)]=
6 -( -4 +5 ) = 6 - 1 = 5
k)-4-[(+10)+3]=
-4 -13 = -17
l)-[9-(-9)]-5= - ( 9+9 ) -5 = -18 -5 = -23