15. 下何者為不等式的解？
(A) x＞15
(B) x＜l5
(C) x＞27
(D) x＜27

答案：登入後查看
統計： A(17), B(126), C(10), D(11), E(0) #625829

詳解 (共 2 筆)

#914564

7-x/3>2

→(7-7)-x/3>-2+7

→--x/3>5

→--x/3*3>5*3

→-x>15

→-x<15

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#5958377

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選(B)

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私人筆記 (共 1 筆)

私人筆記#4917736
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