试题与答案

甲、乙两同学同时解关于x、y的方程组mx+y=32x-ny=9,甲看错了m,解出

题型:解答题

题目:

甲、乙两同学同时解关于x、y的方程组
mx+y=3
2x-ny=9
,甲看错了m,解出的结果是
x=
15
2
y=-3
;乙看错了n,解出的结果是
x=4
y=-5
,你能确定m、n的值和原方程组的解吗?

答案:

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