Answers

2016-04-04T22:39:57+05:30
(i) If the integer is positive, then  a*(-1) = -a
    If the integer is 0 (zero), then a*(-1)=0
    If the integer is negative, then a*(-1)= |a|

Generally, a*(-1) = -a

(ii)
The integer whose product with (-1) is 5   is  (- 5).
    


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2016-04-06T17:24:42+05:30
(i) (-1) × a = -a
(ii) Let the integer be x
x × (-1) = 5
x = 5/(-1)
x = -5
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