Transposition Help

• Jan 2nd 2010, 10:08 AM
woody
Transposition Help
I would be most grateful if someone could help me with the following transposition, basically I’m trying to rearrange an equation to match an answer sheet I have; I’m sure this is simple but if anyone can describe the steps that would be great.

o.k my equation is:

v = -1 / -kt+c

I know that this can be simplified to:

v = 1 / kt-c

I’m just not sure how I get there, thanks.
• Jan 2nd 2010, 10:10 AM
skeeter
Quote:

Originally Posted by woody
I would be most grateful if someone could help me with the following transposition, basically I’m trying to rearrange an equation to match an answer sheet I have; I’m sure this is simple but if anyone can describe the steps that would be great.

o.k my equation is:

v = -1 / -kt+c

I know that this can be simplified to:

v = 1 / kt-c

I’m just not sure how I get there, thanks.

multiply the fraction by $\frac{-1}{-1}$
• Jan 2nd 2010, 10:22 AM
woody
Thanks, but can you actually provide the steps as I cannot see how this gets rid of the minus sign in front of the k (I see that it will change the t+c to t-c)?
• Jan 2nd 2010, 10:32 AM
skeeter
$\frac{-1}{-1} \cdot \frac{-1}{-kt+c} = \frac{(-1)(-1)}{-1(-kt+c)} = \frac{1}{kt - c}$
• Jan 2nd 2010, 10:34 AM
woody
Many thanks.
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