B= (-2)×(-3)×7×(-2)
= 6×7×(-2)
=42×(-2)
=(-84)
D= (-45)-34
=(-79)
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B= (-2)×(-3)×7×(-2)
= 6×7×(-2)
=42×(-2)
=(-84)
D= (-45)-34
=(-79)