-(-二又二分之一)=-(-5/2)=5/2
相反数-5/2
倒数2/5
-(-二又二分之一)与( )互为相反数,与( )互为倒数
-(-二又二分之一)与( )互为相反数,与( )互为倒数
其他人气:142 ℃时间:2019-10-10 01:23:48
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