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Mathematics 22 Online
OpenStudy (anonymous):

solve |5-8x|-7<8

OpenStudy (anonymous):

i got \[\left\{ x|x< 1/8 or x>3/8\right\}\]

Directrix (directrix):

I think that is not correct. What was your very first step?

Directrix (directrix):

|5-8x|-7<8 |5-8x| -7 < 8 +7 +7 ----------------- |5-8x| < 15

Directrix (directrix):

@Justmeneedinghelp Next step?

OpenStudy (anonymous):

division?

jimthompson5910 (jim_thompson5910):

hint: `|x| < k` breaks down into `-k < x < k` where k is some positive number

jimthompson5910 (jim_thompson5910):

example: `|x| < 2` turns into `-2 < x < 2`

Directrix (directrix):

|5-8x| < 15 means -15 < 5 - 8x < 15

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