a negative times a positive is a negative so 2*-4=-8+10=2
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Positive 4
4 + (-5) = -1
Not necessarily. 5 + (-6) = -1, a negative 5 + (-5) = 0 or 5 + (-4) = 1, a positive.
-4+9 = 5
Because the two negatives cancel each other out and become a plus