# Math Help - Rearrange the formula

1. ## Rearrange the formula

So I've been trying for the last hour, to no avail.

p = 2+j/J-3

Rearrange the formula so j is the subject.

2. ## Re: Rearrange the formula

p = 2+j/J-3
The equation as your wrote it is ambiguous. Please rewrite in a non ambiguous way.

eg, do you mean:

$p = \frac{2+j}{j-3}$

or

$p = \frac{2+j}{j} -3$

or...etc

3. ## Re: Rearrange the formula

$p = \frac{2+j}{j-3}$

4. ## Re: Rearrange the formula

$p=\frac{2+j}{j-3}$

(multiply by [j-3])

$(j-3)p={2+j}$

expand the brackets on the left, collect terms, and finish.

Spoiler:

$(j-3)p={2+j}$

$jp-3p={2+j}$

$jp-j -3p=2$

$j(p-1) -3p=2$

$j(p-1) =2+3p$

$j=\frac{2+3p}{(p-1)}$