__The Algebraic
Calculator for Three Unknowns__

__Created
By____
David@TechForText.com,
©2010__

__To contact the author use the
above email address, or__

__left click on these words for a website
communication form.__

__This website
provides a free calculation device, called the ____Algebraic Calculator for Three
Unknowns, available in the JavaScript and spreadsheet formats.__ This Calculator solves
three equations simultaneously, for three unknowns (for AX+BY+KZ=M, DX+EY+FZ=N,
and GX+HY+JZ=W, for X, Y, and Z).

** **

The JavaScript version of the
__Algebraic Calculator for Three Unknowns__ functions online and it is
embedded in this webpage, below the instructions. If you want the
spreadsheet version, or additional information, scroll all the way down beneath
the __online Calculator.__

__Instructions for the
____Algebraic Calculator
for Three Unknowns__

The Algebraic Calculator for Three Unknowns solves three equations for X, Y, and Z. The equations must be similar to AX+BY+KZ=M, DX+EY+FZ=N, and GX+HY+JZ=W, such as the following examples

2X+3Y+5Z=10, 1X+4Y+7Z=18, 9X-4Y+6Z=22

-X+2Y-9Z=24, 8X+6Y+12Z=33, 2X+9Y+14Z=36

77X+56Y+45Z=130, 66X+34Y+19Z=68, 35X+32Y+21Z=88

2X+3Y+4Z=0, 1X-6Y-9Z=6, 3X+2Y-7Z=-4

If the equations you want to solve do not look like the above, try to algebraically rearrange them to make them similar to: AX+BY+KZ=M, DX+EY+FZ=N, and GX+HY+JZ=W.

To use the Algebraic Calculator for Three Unknowns enter TWELVE numbers in the twelve white input boxes, for A, B, K, M, D, E, F, N, G, H, J, and W. (To enter or delete numbers, left click with the mouse on the relevant white input box.) For calculated results left click with the mouse on the background. Alternatively, with the online JavaScript version you can press the calculation button, and with the spreadsheet version you can press the enter key. Numbers and words displayed in red type are calculated results.

**Note:
If less than 12 numbers are entered the Algebraic Calculator for Three
Unknowns may not function properly. The Calculator has a number of
error-checking devices that may display error messages while entering numbers,
which may continue until all 12 numbers have been entered. **

__If
you entered a set of numbers that do not satisfy all of the equations in the
Algebraic Calculator for Three Unknowns, you may get error messages that relate
to one or more specific equations.__

** **

__The Online Algebraic Calculator
for Three Unknowns__

__The Algebraic
Calculator for Three Unknowns,__

__And
Links____ to Obtain the Free
Downloads__

__Algebraic Calculator for Three
Unknowns__

The spreadsheet versions of the
__Algebraic Calculator for Three Unknowns__ require either Microsoft Excel,
or the free OpenOffice.org software package, (available from www.OpenOffice.org). In addition,
Microsoft Windows is required for the spreadsheet versions.

The JavaScript version of the Algebraic Calculator for Three Unknowns can run on any operating system that has JavaScript support, but I only tested it with Microsoft Windows. In addition, the JavaScript version requires a browser that supports JavaScript. Almost all modern operating systems and browsers support JavaScript.

__Algebraic Calculator for Three
Unknowns In the____ __

__Microsoft Excel, OpenOffice Calc,
and JavaScript Formats__

** **

** **

** **

** **

__Note: If you do not have Microsoft Excel,
download the OpenOffice.org software package, because it is free and it is
almost as good as the Microsoft Office suite. To download go to www.OpenOffice.org or left click
on these words.__** **

** **

** **

** **

** **

**If you want a diverse assortment of
calculation devices for algebra and trigonometry, go to the main website at
www.TechForText.com/Algebra****
****This can be done by left clicking on
these words. **

__Services Offered by
the Author__

This website was designed to
maximize efficiency and ease-of-use (usability, user-friendliness). The
text is presented with large fonts. The paragraphs are relatively short,
and the sentence structure and wording were written to maximize
*comprehension. The website has a very simple layout, on a single
page. This makes it easy to __navigate intuitively__, by scrolling down
or up. All the links for downloads and other websites are also written
with large fonts, and clearly marked as links, such as with the following words:
* left click on these words*.

*Note: The material on this website and the Algebraic Calculator for Three Unknowns is technical. A background in mathematics and spreadsheet software is required for maximum comprehension. However, most individuals, without the technical background, will probably understand most of the material, if they have studied algebra.

__Services Offered by
the Author David@TechForText.com__

I design and build user-friendly
software based calculation devices for __arithmetic__, __accounting__,
__currency exchange rates__,
__algebra__, __trigonometry__,
__correlations__, __calculus__, and databases with built-in calculation
devices. I also create attractive online calculation devices, and web
communication forms for websites. This includes website forms with
built-in calculation devices.

I generally make these devices in the Microsoft Excel, OpenOffice Calc, and the JavaScript formats, but I can work with other spreadsheet formats besides the above.

I write instructions for the devices I build. I can also write instructions for software and computer devices created by others. In addition, I can write advertising for your websites, products and services.

**For a list of websites with calculation
devices that I created, left click on these words, or go to the following
website: www.TechForText.com/Math**

For a list of all the services I
offer see **www.TechForText.com**

For a list of all my websites see
**www.David100.com**

My resume is online at: **www.David100.com/R**

I can provide the services
mentioned above on a fee-for-service basis, or possibly based on temporary or
permanent employment. If you are interested in my services, and want
additional contact information or more data on the services I offer, you can
email me at **David@TechForText.com
**or **use a website communication
form, by left clicking on these words.**

I am located in the USA. If you are a great distance from my locality or are in another country, this is not important. I can provide these services worldwide, because the software and websites I make can be delivered through the Internet to any locality, providing there are no governmental restrictions.

**To return to the top of this website left click on these
words**