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8+(-5)-(+8)-(-5)=
= 8 - 5 - 8 + 5=
= 8 - 8 - 5 + 5=
= 0
b)
-23+(-25)-(-23)+(+13)=
= - 23 - 25 + 23 + 13=
= - 23 + 23 - 25 + 13=
= - 12
c)
-15-(-26)+4-26+24=
= - 15 + 26 + 4 - 26 + 24=
= -15 + 26 - 26 + 4 + 24=
= - 15 + 4 + 24 =
= - 11 + 24=
= 13
d)
[-(-4)-(-10)+(-16)]-(50-13)=
= [ 4 + 10 - 16] - 37 =
= [14 - 16] - 37 =
= - 2 - 37=
= - 39
e)
(-45):(-3)-(-11)*3=
= 15 - (- 33) =
= 15 + 33=
= 48
f)
(-2)^2+(-8):(-1)-(-35):(-7)=
= 4 + 8 - 5=
= 12 - 5=
= 7
g)
[63:(-9)+(-13)]*(-8)=
= [ - 7 - 13] * (-8)=
= - 20 * (-8) =
= 160