rearrange for t to be subject

I did at first

but then that still has t in it so I tried

so

does that help at all?

I feel I've gone terribly wrong, any help please?

Printable View

- May 31st 2010, 09:11 AMMukilabRearraging the formula

rearrange for t to be subject

I did at first

but then that still has t in it so I tried

so

does that help at all?

I feel I've gone terribly wrong, any help please? - May 31st 2010, 09:19 AMskeeter

- May 31st 2010, 09:20 AMmasters
- May 31st 2010, 09:40 AMMukilab
heh, always seem to forget factorising

- May 31st 2010, 10:03 AMArchie Meade
Hi Mukilab,

you have quite a bit of work to do to master this....

When dealing with a fraction, multiply both sides of the equality by the denominator,

just as in

Hence, the 1st step is

You want t by itself, but it's in two places here,

not only that but it's on opposite sides.

Hence you next bring the 2 t's to the same side, as in 3x=x+10, 3x-x=x-x+10, 2x=10

Before we bring the t's together, we need to multiply out the right hand side.

2(4+5)=2(9)=18

2(4+5)=2(4)+2(5)=8+10=18

therefore, we have

We get the t's on the same side by adding yt to both sides as we will then have no t's on the right

Now we factorise the left to have t only once

this is now the same as divide both sides by 3...

hence divide both sides by (2p+y)

- May 31st 2010, 10:32 AMMukilab
Thanks but I didn't explain when I said that I forgot to factorise it

I had written down this:http://www.mathhelpforum.com/math-he...938c8a94-1.gif

but I didn't think it was of any significance because I forgot to factorise it so I scrapped it in favour of that new, incorrect way.

Thanks for taking the time to explain it the other way though.