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• –1 is the greatest negative integer
• 1 is the smallest positive integer
• 0 is greater than any negative integer
• 0 is smaller than any positive integer
The absolute value
• |a|=a if a is positive
• |- a | = a if a is negative
• |a|=0 if a = 0
• Example
• | –5 | = 5 | –3 | = 3
• If | x | = 7 then x = 7 or –7
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