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当k为何值时，方程组的解中x与y的值互为相反数？
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教案备课库《7.2二元一次方程组的解法（一）—代入消元法课后作业》真题及答案
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m为何值时方程组的解互为相反数求这个方程组的解．
若方程组的解x与y是互为相反数则k的值为
4
6
﹣6
﹣1
已知方程组的解中x与y相反数求k的值.
若方程组的解x和y互为相反数求k的值．
当a为何值时方程组的解xy的值互为相反数
若方程组的解x和y互为相反数则k的值为
﹣4
4
2
﹣2
已知方程组的解中x与y相反数求k的值.
已知关于xy的二元一次方程组的解互为相反数则k的值是＿＿＿＿.
若方程组的解x与y是互为相反数求k的值．
若方程组的解x和y互为相反数则k的值为
2
-2
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若方程组的解x与y互为相反数则k的值为．
若方程组的解x与y是互为相反数求k的值
已知关于xy的二元一次方程组的解互为相反数则k的值是＿＿＿＿.
当a为何值时方程组的解xy的值互为相反数．
若方程组的解x与y是互为相反数求k的值
若方程组的解x与y是互为相反数则k的值为
5
-5
6
-6
已知关于xy的方程组其中﹣3≤a≤1给出下列结论①是方程组的解②当a=﹣2时xy的值互为相反数③当a
①②
②③
②③④
①③④
已知关于xy的二元一次方程组的解互为相反数则k的值是.
已知关于xy的二元一次方程组的解互为相反数求xya的值.
当m为何值时关于xy的方程组的解互为相反数
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