1、如果4/a>0,1/b>0,那么a/b﹙ ﹚0 2、如果5a>0,0.3b<0,0.7c<0,那么b/ac=( )03、﹣0.125的相反数的倒数是﹙ ﹚4、若a>0,则|a|/a=( );若a>0,则|a|a/=( ) 5、已知|x+2|+|y-3|,求﹣2又1/2x-5/3y+4
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![1、如果4/a>0,1/b>0,那么a/b﹙ ﹚0 2、如果5a>0,0.3b<0,0.7c<0,那么b/ac=( )03、﹣0.125的相反数的倒数是﹙ ﹚4、若a>0,则|a|/a=( );若a>0,则|a|a/=( ) 5、已知|x+2|+|y-3|,求﹣2又1/2x-5/3y+4](/uploads/image/z/1562248-64-8.jpg?t=1%E3%80%81%E5%A6%82%E6%9E%9C4%2Fa%EF%BC%9E0%2C1%2Fb%EF%BC%9E0%2C%E9%82%A3%E4%B9%88a%2Fb%EF%B9%99+%EF%B9%9A0+2%E3%80%81%E5%A6%82%E6%9E%9C5a%EF%BC%9E0%2C0.3b%EF%BC%9C0%2C0.7c%EF%BC%9C0%2C%E9%82%A3%E4%B9%88b%2Fac%EF%BC%9D%28+%2903%E3%80%81%EF%B9%A30.125%E7%9A%84%E7%9B%B8%E5%8F%8D%E6%95%B0%E7%9A%84%E5%80%92%E6%95%B0%E6%98%AF%EF%B9%99++%EF%B9%9A4%E3%80%81%E8%8B%A5a%EF%BC%9E0%2C%E5%88%99%7Ca%7C%2Fa%EF%BC%9D%28+++%29%EF%BC%9B%E8%8B%A5a%EF%BC%9E0%2C%E5%88%99%7Ca%7Ca%2F%EF%BC%9D%EF%BC%88++++%EF%BC%89+5%E3%80%81%E5%B7%B2%E7%9F%A5%7Cx%2B2%7C%2B%7Cy-3%7C%2C%E6%B1%82%EF%B9%A32%E5%8F%881%2F2x%EF%BC%8D5%2F3y%EF%BC%8B4)
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