# Solving inequalities

• Sep 22nd 2009, 09:33 AM
letzdiscuss
Solving inequalities
Write the solutions in interval notations.
a) 0 < absolute( 2x + 1) < 7
b) absolute ( 4 - 7x) less than or equal to 1.9

How do I solve inequalities with absolute values in them (Doh)
Any help is appreciated !
• Sep 22nd 2009, 09:35 AM
stapel
Quote:

Originally Posted by letzdiscuss
How do I solve inequalities with absolute values in them

Ouch! They were supposed to explain that to you before they assigned questions on it! (Surprised)

To learn how to solve absolute-value inequalities, try here. (I am assuming that you're familiar with regular linear inequalities and with how absolute values work.)

Once you've studied the basic terms and techniques, please attempt the exercises. If you get stuck, you can then reply with a clear listing of your steps and reasoning so far.

Thank you! (Wink)
• Sep 22nd 2009, 09:49 AM
letzdiscuss
Quote:

Originally Posted by stapel
Ouch! They were supposed to explain that to you before they assigned questions on it! (Surprised)

To learn how to solve absolute-value inequalities, try here. (I am assuming that you're familiar with regular linear inequalities and with how absolute values work.)

Once you've studied the basic terms and techniques, please attempt the exercises. If you get stuck, you can then reply with a clear listing of your steps and reasoning so far.

Thank you! (Wink)

Thank you. I also have one quick question; when do you switch the signs? Like the directions. Is it when you divide both sides by sth or multiply?