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(i) For any integer a, what is (-1) x  a equal to? 

(ii) Determine the integer whose product with (-1) is:

(a) –22   (b) 37    (c) 0

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(i) -1x  a = -a, where a is an integer.

(ii) (a) -1 x-22 = 22

(b) -1 x 37 = -37

(c)(-1) x 0 = 0

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