## BulletProof 2 years ago Solve v= p/2(c+L) for L

1. sasogeek

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

2. BulletProof

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

3. sasogeek

yeah, alright, let's fix this :)

4. BulletProof

ok :)

5. sasogeek

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

6. BulletProof

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

7. sasogeek

yes, next step

8. sasogeek

Get it? |dw:1379883307166:dw|

9. BulletProof

Yes.

10. sasogeek

alright, next step

11. sasogeek

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

12. sasogeek

13. sasogeek

|dw:1379883756318:dw|

14. sasogeek

get it?

15. BulletProof

sure

16. sasogeek

alright, what do you think is the result?

17. BulletProof

Okay, so we divied everything by 1/2

18. sasogeek

we multiply* everything by 1/2

19. BulletProof

opps srry mistake. yes multiply

20. sasogeek

don't confuse the two statements. we multiply everything by 1/2, same as we divide everything by 2 :)

21. sasogeek

so what next?

22. BulletProof

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

23. sasogeek

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

24. BulletProof

yes

25. sasogeek

alright, and do you know that, to move 1 to the other side of the equation, means to do this \(\huge 1-1+1=0+1 \) ?

26. BulletProof

yes

27. sasogeek

alright, then you know that, whatever you do to the left side of an equation, you do the same to the right... yeah?

28. BulletProof

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

29. sasogeek

exactly, we put the half in initially to cancel out out the 2 in 2L, but once we multiply the left side by 1/2, we have to multiply the right side by 1/2 as well

30. sasogeek

do you understand now?

31. BulletProof

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

32. sasogeek

yup, can you simplify that?

33. BulletProof

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

34. sasogeek

35. sasogeek

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

36. BulletProof

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

37. sasogeek

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

38. BulletProof

okay thanks :)