网址:http://m.1010jiajiao.com/timu3_id_675189[举报]
2是________的相反数,________的相反数是-3.12,0的相反数是________,a的相反数是________.
-x是________的相反数,的相反数是________,的相反数是________.
是________的相反数,a-1的相反数是________.