My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum


Reply
 
LinkBack Thread Tools Display Modes
September 27th, 2009, 03:14 PM   #1
Newbie
 
Joined: Sep 2009

Posts: 1
Thanks: 0

Transforming Equations

Have a test on tuesday.... We're just doing basic review (first weeks of school)... Anyway I am stuck on a few problems on transforming equations and am wondering if the misc can help


Isolate for the given variable:

1. x+y=xy Solve for Y

2. x+y+z=xyz Solve for Z

3. (1/x) + (1/y)=(1/x)(1/y) Solve for Y

4. (1/x) + (1/y) + (1/z)= (1/x)(1/y)(1/z) Solve for Z
busbus3417 is offline  
 
September 28th, 2009, 07:30 AM   #2
Senior Member
 
Joined: Mar 2009

Posts: 318
Thanks: 0

How far have you gotten? Where are you stuck on each of these?

Please be complete. Thank you!
stapel is offline  
September 29th, 2009, 03:07 AM   #3
Global Moderator
 
Joined: Dec 2006

Posts: 18,142
Thanks: 1417

Each equation needs to be rearranged into the form ax = b, where x is the variable you are asked to solve for. The answer will then be x = b/a (provided a is not zero). If there are, say, two terms involving x, the rearranged equation would be of the form (a + c)x = b, and the solution would be x = b/(a + c) (provided a + c is not zero).
skipjack is offline  
September 29th, 2009, 06:34 AM   #4
Senior Member
 
Joined: Mar 2007

Posts: 428
Thanks: 0

Re: Transforming Equations

Surely, if it is a review, the rules are already evident. If there is absolutely no sign of success, then I'd strongly recommend getting a tutor, as there is usually much that needs to be discussed. These studies, like others, require classroom dialogue as well as text and notes for reference. The solution of some more examples, a very few isolated ones, will not cover the main ideas to enable individual solution at a later date, and it is those main ideas that need to be noted then discussed practiced.

Otherwise, showing a little effort would be very much to your advantage.
David is offline  
September 29th, 2009, 08:16 AM   #5
Newbie
 
Joined: Sep 2009

Posts: 2
Thanks: 0

Re: Transforming Equations

1.
x + y = xy
x = xy - y
x = y(x - 1)
y = x / (x-1)
matt12345 is offline  
Reply

  My Math Forum > High School Math Forum > Algebra

Tags
equations, transforming



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Transforming Circles Higg Algebra 0 March 11th, 2012 07:18 PM
transforming an integral jimooboo Calculus 1 February 26th, 2012 05:55 PM
Transforming exponential functions ilovetheflowguy Algebra 3 February 20th, 2012 08:42 PM
Transforming an object relative to its rotation nappz Algebra 0 January 23rd, 2011 02:07 AM
Transforming a Mesh alias_neo Linear Algebra 0 October 12th, 2010 05:33 AM





Copyright © 2017 My Math Forum. All rights reserved.