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do you have an idea what to do or have you tried something already?

Well, I got |dw:1379882997265:dw| but it's incorrect

yeah, alright, let's fix this :)

ok :)

Do you understand this?
|dw:1379883062090:dw|

Yes, so we get 2c+2L=p/v

yes, next step

Get it?
|dw:1379883307166:dw|

Yes.

alright, next step

Multiply both sides by 1/2, in other words, divide both sides by 2
|dw:1379883445598:dw|

made a mistake, one sec

|dw:1379883756318:dw|

get it?

sure

alright, what do you think is the result?

Okay, so we divied everything by 1/2

we multiply* everything by 1/2

opps srry mistake. yes multiply

so what next?

well now I am confused. wherre did the 1/2 come out of?

alright, here's what.
\(\huge 1-1=0 \)
do you agree?

yes

yes

ah okay so that's y you put the 1/2 in.

do you understand now?

okay so i got L= (1/2) p/v- (1/2)-2c

yup, can you simplify that?

i dont know how I would simplify the 1/2's

alright, i'll help you out

you'll have this, because the 2's will cancel out
|dw:1379884930249:dw|

Thats what I got. Oh so I was rtight :)

you got the 2v up
that's what was wrong lol :P the 2v must be down if you do it how i showed you

okay thanks :)