Posted by **Nik** on Thursday, August 2, 2007 at 10:15am.

-9/7x + 8 < -4x - 5

-9/7x + 4x + 8 , -4x + 4x - 5

-9/7x + 4x +8 < -5

The book then has

19/7x + 8 < - 5

I know how to solve this but I am lacking or trying to remeber how they got 19/7 - need a refresher

Convert the "x" terms to common denominators

4 x - (9/7) x = 28 x - (9/7) x

= (19/7) x

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