Transposing Formula: How to Make "l" the Subject

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Discussion Overview

The discussion revolves around the process of transposing a formula to isolate the variable "l" in the equation e = Blv. Participants are exploring the methods of rearranging equations, particularly in the context of returning to academic studies.

Discussion Character

  • Homework-related
  • Mathematical reasoning

Main Points Raised

  • One participant expresses confusion about transposing the formula e = Blv, particularly in comparison to simpler formulas like V = IR.
  • Another participant suggests applying the same strategy used for transposing other formulas, specifically recommending dividing both sides by Bv to isolate "I."
  • A third participant humorously acknowledges their lack of clarity on the topic.
  • A fourth participant questions the understanding of key mathematical concepts such as "factor," "product," and "reciprocal," implying these may be relevant to the discussion.

Areas of Agreement / Disagreement

The discussion does not reach a consensus, as participants express varying levels of understanding and confusion regarding the transposition process.

Contextual Notes

There are indications of missing foundational knowledge regarding mathematical operations, which may affect participants' ability to transpose the formula correctly.

ianNe5
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Hi all

Need some help on transposing formula's.

I know I've tranposed before, but was years ago.

Returning to college etc,
the formula is

e=Blv

whats confusing me is there are 3 values being multiplied by themselves, all my previous formula's have been V=IR ect, those I find easy.

How would I make "l" the subject

I know to make "v" the subject I would just divide both sides by Bl then cancel etc.

Thanks
 
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Why don't you apply the same strategy to solve for "I" or - in your terminology - to make "I" the subject...divide both sides by B v and then cancel ..
 
lol...yeah I am not with it today
 
to IanNe5 in post #1, do you understand "factor" and "product"? Then, also do you understand "reciprocal"?
 

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