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Yo hice esto:
Resolví:
(-4)(-2) = 8
(-3)(+2) = (-6)
(-5)(-1) = 5
Entonces tenemos que:
8 + (-6) - 5 = 8 - 6 - 5 = -3
(+8)+(-6)-(+5)
+8-6-5
+8-11
-3