2. 外语
  3. Which of the following is equivalent to the inequality 3x-6>6x+9?

Which of the following is equivalent to the inequality 3x-6>6x+9?

admin2013-05-19  64
问题 Which of the following is equivalent to the inequality 3x-6>6x+9?
选项 A、x>-5
B、x<-5
C、x>-2
D、x<3
E、x>3
答案B
解析 The correct answer is B. To answer this question, solve the inequality by isolating x on the left side(remember to switch the sign in the final step!):
3x-6>6x+9
-3x>15
x<-5
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