四分之ｘ－３－二分之ｘ－６＜等於２ｘ?

2015-11-18 12:52 pm

回答 (1)

2015-11-18 8:41 pm

(x - 3) / 4 - (x - 6) / 2 <= 2x

4 * Eq. : (x-3) - 2(x-6) <= 8x

0 >= x - 3 - 2x + 12 - 8x

>= -9x + 9

>= -x + 1

Answer: x >= 1

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