Need help w/ solving literal eqns: 4x = y, xyz = t, 4xz = P,

[myers]

I have to answer and show my work for this problems.

Solve the following equations for the variable x.

1. 4x = y

2. xyz = t

3. 4xz = P

4. y = xtz

5. 3.5tpx = R

I have not had any algebra before, this is part of an on-line college course for Business Admin.( did not know I would have to take algebra for this course. Accounting yes, Algebra no.) And the text book and CD that was sent are no help, believe me. I have other algebra problems (ex. Thermodynamics) that make no sense that are part of this course. Please help I have tried software and other help site and I am having no luck.

 

[jonboy]

Hello, myers!


You need to review the Division property. This states that you can divide both sides of an equation be any number and it will still be balanced.


1. \(\displaystyle \L \;4x\,=\,y\)


Divide by \(\displaystyle 4\):\(\displaystyle \L \;x\,=\,\frac{4}{y}\)


This works even with:\(\displaystyle \L \;y\,=\,xtz\)


Divide by \(\displaystyle tz\):\(\displaystyle \L \;x\,=\,\frac{y}{tz}\)

 

[stapel]

1. 4x = y

...I am having no luck.

Do you know how to solve "4x = 12" for x? How about "4x = 15"?

Thank you.

Eliz.