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September 18, 2014

Homework Help: Algebra

Posted by A. W. on Thursday, February 5, 2009 at 11:45am.

Here is what I got to do : write an inequality for my classmates to solve. In my inequality, use both the multiplication and addition properties of inequalities; before I summit this to class I want to know if I did it right: 5(x + 8) -6 > 4(x + 6);
5x + 40 - 6 > 4x + 24; 5x + 44 - 44 > 4x + 24 - 44; 5x - 4x > 4x - 4x -20; 1x/1 < -20/1; x<-20, is this right?


Responses


Algebra - bobpursley, Thursday, February 5, 2009 at 11:35am
5(x + 8) -6 > 4(x + 6);
5x + 40 - 6 > 4x + 24;
5x + 44 - 44 > 4x + 24 - 44;
5x - 4x > 4x - 4x -20;

1x/1 < -20/1; Where in the world did you get this step? You did not divide by a negative.



Algebra - A. W., Thursday, February 5, 2009 at 11:41am
I got 5x-4x> 4x - 4x-20; 1x< -20; you have to get x by itself so you divide both side by 1; 1x/1 < -20/1; x< -20 that is how I got x<-20

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