x-3x=k-2
5x-3y=k
-2x=k-2
因为写x=y
所以 5x-3y=k
5x-3x=k
x=k/2
则 -2x=k-2
-k=k-2
得 k=1
如果方程组x-3x=k-2,5x-3y=k的解x与y相等.求k的值
如果方程组x-3x=k-2,5x-3y=k的解x与y相等.求k的值
数学人气：333 ℃时间：2020-01-28 04:08:39
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