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英语数学一题
The teacher taught the students the way to study French.改为同义句
The teacher taught the students()()study French.
当整数k取何值时,方程9x-3=kx+14
人气:283 ℃ 时间:2020-06-17 22:30:16
解答
how to
方程化为(9-k)x=17
当9-k=0,即k=9时,方程无解.
当9-k≠0,即k≠9时,方程有唯一解x=17(9-k).
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