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a.
(- 1)(- 6) = 6
(4)(2) = 8
Verdadero
b.
(- 1)(6) = - 6
(2)(- 4) = - 8
Verdadero
c.
(- 1)( - 4)(- 10) = (4)(- 10) = - 40
(- 2)(- 3)(- 1) = (6)(- 1) = - 6
Verdadero
d.
(- 1)(- 2)(- 3) = (2)(- 3) = - 6
(1)(2)(3) = 6
Falso