testing header
Math Goodies is a free math help portal for students, teachers, and parents.
Free Math
Interactive Math Goodies Software

Buy Math Goodies Software
testing left nav
Math Forums @ Math Goodies
Math Forums @ Math Goodies
Home | Profile | Active Topics | Members | Search | FAQ
Save Password
Forgot your Password?

 All Forums
 Homework Help Forums
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

New Member

1 Posts

Posted - 03/29/2012 :  20:12:48  Show Profile  Reply with Quote
Can this be -b and m as well as b and -m ?

Give what each equation must be to eliminate the term containing x.

mx - ny = z

bx - ny = r


Solve for x and y.

ax+by = r
ax+ cy = s

Can it be both x= bs-cr/a(b-c) or x= cr-bx/ac-ab
y= s-r/c-b or y= r-s/b-c
Go to Top of Page


3059 Posts

Posted - 03/30/2012 :  07:56:11  Show Profile  Reply with Quote
Multiply numerator and denominator by -1 so that you see that both forms are equivalent.
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
Math Forums @ Math Goodies © 2000-2004 Snitz Communications Go To Top Of Page
This page was generated in 0.08 seconds. Snitz Forums 2000
testing footer
About Us | Contact Us | Advertise with Us | Facebook | Blog | Recommend This Page

Copyright © 1998-2014 Mrs. Glosser's Math Goodies. All Rights Reserved.

A Hotchalk/Glam Partner Site - Last Modified 18 Dec 2014