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cbac>ab cb>ab c+b>a+b
a•b>0 a+b<0 |a|<|b| a﹣b>0
cbac>ab cb>ab c+b>a+b
ac>bc |a﹣b|=a﹣b ﹣a<﹣b<c ﹣a﹣c>﹣b﹣c
a>b aab>0
a>b a<1 ab<0 b<1
ac>bc |a﹣b|=a﹣b ﹣a<﹣b<c ﹣a﹣c>﹣b﹣c
ab>bc; ac>bc; ac>ab; ab>ac;
a•b>0 a+b<0 |a|<|b| a﹣b>0
ac>bc |a﹣b|=a﹣b ﹣a<﹣b<c ﹣a﹣c>﹣b﹣c
ab>0. aa—b>0. .
aab>0 a>b
a>b b-a<0 <0 |a|>|b|
ac > bc |a–b| = a–b –a <–b < c –a–c >–b–c
a>b a<1 ab<0 b<1