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> (2011江苏泰州,20,8分)解方程组,并求的值.-八年级数学
(2011江苏泰州,20,8分)解方程组,并求的值.-八年级数学
题目简介
(2011江苏泰州,20,8分)解方程组,并求的值.-八年级数学
题目详情
(2011江苏泰州,20,8分)解方程组
,并求
的值.
题型:解答题
难度:偏易
来源:不详
答案
解:
②×2-①,得9x=6,解得x=.
将x=代入①,得2+6y=10,解得y=.
所以方程组的解为
,于是
=
=
。
略
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题目简介
(2011江苏泰州,20,8分)解方程组,并求的值.-八年级数学
题目详情
答案
②×2-①,得9x=6,解得x=.
将x=代入①,得2+6y=10,解得y=.
所以方程组的解为