题目内容

解方程组
解:①´2得:4x+2y=4  ③···················· 1’
②+③得:7x="14··························" 2’
∴x="2·······························" 3’
把x=2代入①得:y=?2······················· 4’
∴原方程组的解为:
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网