计算:|负10|+|负5|=___,|负6|÷|负3|=____,|负7.5|负号|负4.5|=______1.若a不等于0,则a分之|a|的值是( )A.1 B.0 C.负1 B.±12.若|x|=5,则x=____3.若|a|=2,|b|=3,a>b,则a=____,b=______4.下列推断正确的是(  )A.若|a|=|

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