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a) –20 = (-4)(5)
b) –16 = (8)(-2)
c) –18 = (6)(-3)
d) +8 = (-4)(-2)
2DA PARTE:
a) (-3) • (–7) = 21
c) (-8) • 9 = –72
e) (–4) • (-1) = 4
b) 5 • (-7) = –35
d) 6 • (3) = 18
f) (–4) • (16) = –64