burnbird16 wrote:Er...I didn't need a rant...

I'm sorry to hear that somebody "ranted" at you. (That must have been a private message, since all that's been done publically is request clarification, so any suggestions and helps will be correct. Please contact the Admin about whatever message you received. Thanks!)

burnbird16 wrote:I suppose I'll need a lesson in both of these....

To learn how to solve literal equations (that is, equations with more than one variable, and you're solving for a stipulated variable, such as

, in this case), try

this lesson. (But from the work you've shown, I don't think you are having any difficulty with the topic. It's a possibly poorly-written assignment which is the problem.)

Since they've given you no relationship between

and any of

,

,

,

,

, and

, I don't see how you can proceed

to the answer they seem to want.

burnbird16 wrote:Here's what I got for the first one....

bcx = abc - acy - abz <-- Then, I pulled out a, in reverse distribution. . .<== Excellent!

Excellent! That's the step that most students miss!

burnbird16 wrote:...so my answer was

bcx/(bc - cy - bz) = a

That solves the literal equation for

, but you need to solve it for

. Unless your instructor typoed the instructions, what you've done, though completely correct and very-well documented, cannot be the expected answer. Same thing for the second exercise: your work is great, and I get the same answer for "

", but your instructor asked you for "

". I have no idea what you're supposed to do next.