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The result obtained when x is multiplied by y is equal to ten times the result o
The result obtained when x is multiplied by y is equal to ten times the result o
游客
2024-01-13
31
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问题
The result obtained when x is multiplied by y is equal to ten times the result obtained when y is subtracted from x. If y equals 5, what does x equal?
选项
A、50
B、25
C、15
D、10
E、5
答案
D
解析
本题考查方程的列写,由题意得到:
xy=10(x-y),
把y=5代入得到x=10。
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