The answer is:
B) 4 . (-7)
C) 12. (-9)
What are Negative Numbers in Math?
A negative number is a number whose value is always less than zero and it has a minus (-) sign before it. On a number line, negative numbers are shown to the left of zero. For example, - 2, - 3, - 4, - 5 are called negative numbers.
Learn more about negative numbers here: brainly.com/question/526471
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