Drexel dragonThe Math ForumDonate to the Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.

Math Forum » Discussions » Inactive » k12.ed.math

Topic: Solving equation
Replies: 13   Last Post: Nov 21, 2004 11:50 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]

Posts: 5
Registered: 12/6/04
Solving equation
Posted: Oct 10, 2004 9:45 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Hello - I am new to pre/algebra, and I have difficulty understanding
how to do equations with variables on both sides.

Like this:

7r - 1 = 5r - 13

I get rid of one and have:

7r = 5r - 12

Then I get rid of 5r and have:

3r = -12

r = -4 ?

Could someone tell me where I go wrong with this? Appreciate any

submissions: post to k12.ed.math or e-mail to k12math@k12groups.org
private e-mail to the k12.ed.math moderator: kem-moderator@k12groups.org
newsgroup website: http://www.thinkspot.net/k12math/
newsgroup charter: http://www.thinkspot.net/k12math/charter.html

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2015. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.