Calcule as OPERAÇÕES a segui:

a)25:(-5)+(-8+9-11)

b)(-6)+(-4).(-2)-(-8).(-2)

c)[(27-15+8)+(-3)-(-9)]

d)|-15):(-3)+12:(-2)+60

e){(-20):(+4).(-2)}+{-5-9}

f){(+17+8)+(.13+8).(-4)}-100


Me ajuda ai vai :((
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