Question

qual o resultado da soma w com z?



w=(-20).[(+3).(-4)])e z=[(+8).(-4)].(+8)

a) +240
b)-256
c)496
d)-16​

Answer 1

W = (-20) . [(+3) . (-4)]

W = (-20) . [- 12]

W = + 240

Z = [(+8) . (-4)] . (+8)

Z = [- 32] . (+8)

Z = - 256

W + Z = (+240) + (-256)

W + Z = 240 - 256

W + Z = - 16

Letra D