解答题-计算题 适中0.65 引用8 组卷726
用消元法解方程组
时,两位同学的解法如下:
![](https://img.xkw.com/dksih/QBM/2018/6/16/1968575774613504/1969938589507584/STEM/8de2e5f68c5e40bb923a76338c8f63c7.png?resizew=214)
![](https://img.xkw.com/dksih/QBM/2018/6/16/1968575774613504/1969938589507584/STEM/7b79908bc22a4bf0887aa3c2523f2ea6.png?resizew=321)
(1)反思:上述两个解题过程中有无计算错误?若有误,请在错误处打“×”.
(2)请选择一种你喜欢的方法,完成解答.
![](https://img.xkw.com/dksih/QBM/2018/6/16/1968575774613504/1969938589507584/STEM/8de2e5f68c5e40bb923a76338c8f63c7.png?resizew=214)
![](https://img.xkw.com/dksih/QBM/2018/6/16/1968575774613504/1969938589507584/STEM/7b79908bc22a4bf0887aa3c2523f2ea6.png?resizew=321)
(1)反思:上述两个解题过程中有无计算错误?若有误,请在错误处打“×”.
(2)请选择一种你喜欢的方法,完成解答.
2018·浙江舟山·中考真题
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