## anonymous one year ago how do I solve v=lwh sove for h

1. Nnesha

cancel out the lw from right side how would you do that ? would add lw both sides subtract or divide ?

2. anonymous

can you show me how to cancel

3. Nnesha

ye it's l times w times h (multiplication ) to cancel out the lw from right you should apply opposite of multiplication

4. Nnesha

so divide both sides by lw

5. Nnesha

here is an example ab = y (solve for b) so i would divide both sides by a $\huge\rm \frac{ \cancel{a}b }{ \cancel{a} }=\frac{ y }{ a }$\ b=y/a

6. anonymous

Thank you. how do you solve 5/9(f-32) solve for f

7. anonymous

c=5/9

8. Nnesha

$\huge\rm c=\frac{ 5 }{ 9 }(f-32)$ like this ?

9. anonymous

how do you solve for f

10. Nnesha

first of all move 5/9 to the left side so multiply both sides by 9/5 let me know what you get after this

11. anonymous

45/45

12. Nnesha

which is equal to what ? 45/45= ?

13. anonymous

1

14. Nnesha

yes right and you have to mutliply 9/5 both sides $\huge\rm \color{blue}{\frac{ 9 }{ 5}} \times c= \frac{ 5 }{ 9 }(f-32) \times \color{blue}{\frac{ 9 }{ 5 }}$$\large\rm \color{blue}{\frac{ 9 }{ 5}} \times c= \frac{ \cancel{5} }{\cancel{ 9} }(f-32) \times \color{blue}{\frac{\cancel{ 9} }{ \cancel{5} }}$$\large\rm \color{blue}{\frac{ 9 }{ 5 } }\times c =f-32$ now move -32 to the left side

15. anonymous

do I still have to add the rest of the equation. once I move -32 to the left

16. Nnesha

you have to add 32both sides

17. anonymous

im confused

18. Nnesha

hmm why ?

19. anonymous

because you said to add 32 on both sides. will that include the rest of the equation

20. Nnesha

solve for f right so you need to transfer all the numbers and variables to the left side 32 is negative at right side that's why we should add

21. Nnesha

yes right

22. Nnesha

|dw:1441637511242:dw|

23. Nnesha

so what would be ur final answer ?

24. Nnesha

let me know if u didn't understand :)

25. anonymous

um. 9c=37

26. Nnesha

how did you get 37 ? and who kidnapped 5 from left side ?

27. anonymous

I crossed out 32 from right side and added 5 + 32

28. Nnesha

you can't add 5+ 32 it's 9c/5 not just 5

29. Nnesha

|dw:1441637740316:dw|

30. anonymous

oh ok. so is there another step

31. Nnesha

nope that's it!

32. anonymous

so how did we solve for f

33. Nnesha

what do you get at right side when you add 32 ?

34. anonymous

64

35. Nnesha

how ??....

36. Nnesha

$$\color{blue}{\text{Originally Posted by}}$$ @aveena47 I crossed out 32 from right side $$\color{blue}{\text{End of Quote}}$$ ^^^

37. Nnesha

|dw:1441638051059:dw| -32+32= ?

38. anonymous

o

39. Nnesha

yes right so what do you have left at right side ? left side) you can't combine 9c/5 with 32 bec they aren't like terms

40. anonymous

f

41. Nnesha

right.

42. anonymous

f=9c/5

43. Nnesha

what about the 32 left side ?

44. anonymous

f=9c/5+32

45. Nnesha

yes right!

46. anonymous

thanks

47. anonymous

ax+by=c solve for x