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September 18, 2014

September 18, 2014

Posted by **mimz** on Sunday, November 21, 2010 at 12:35pm.

2-x/3less than or eqaul to (</) 3-2x/5

lxl less than or equal to 5

2 is less than or eqaul to lx-6l less than or equal to 5

- math -
**Reiny**, Sunday, November 21, 2010 at 1:55pm1.

2 - x/3 < 3 - 2x/5

multiply by 15, the LCD

30 - 5x ≤ 45 - 6x

6x - 5x ≤ 45-30

x ≤ 15

2.

|x| ≤ 5

x ≤ 5 AND -x≤5

x≤5 AND x≥-5

in short notation: -5 ≤ x ≤ 5

3.

2 ≤ |x-6| ≤ 5

case1: 2 ≤ x-6≤ 5

8 ≤ x ≤ 11

case2:

2 ≤ -x+6≤ 5

-4 ≤ -x ≤ -1

4 ≥ x ≥ 1 or

1 ≤ x ≤ 4

so 8 ≤ x ≤ 11 OR 1 ≤ x ≤ 4

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