anonymous one year ago Help please. Will fan and Medal. Please show work. Will post question in comments

1. anonymous

|dw:1444267578152:dw|

2. anonymous

@satellite73

3. anonymous

Okay. What do you think the answer is? We will work from there.

4. anonymous

Do you have any clue?

5. anonymous

I have no clue

6. anonymous

Alright. Lets get started then.

7. anonymous

First, find the least common denominator.

8. anonymous

Left is 12, right is 5.

9. anonymous

5 x 12 = 60 For this case is the lowest.

10. anonymous

Rewright them.

11. anonymous

So times the rightside by 5 and the left bu 12.

12. anonymous

k

13. anonymous

$\frac{ 15y-8 }{ 60}$ = $\frac{ y }{ 60 }$

14. anonymous

ok I understand so far

15. anonymous

Okay, so subtract 40 from both sides.

16. anonymous

why would I subtract 40? That confuses me

17. anonymous

Okay, lets do it another way sorry.

18. anonymous

19. anonymous

Pretend the right side is 0.

20. anonymous

$\frac{ 3y - 8 }{ 12 } - \frac{ y }{ 5 }$ $= \frac{ y }{ 5 } - \frac{ y }{ 5 } = 0$

21. anonymous

Subtract y / 5 from both sides.

22. anonymous

To make the right = 0

23. anonymous

ok

24. anonymous

(3y-8)/12-(y/5) = 0

25. anonymous

$\frac{ 3y - 8 }{12 - \frac{ y }{ 5 } }$

26. anonymous

we wouldn't be subtracting y from the 3y up top and the 5 from the 12 down below?

27. anonymous

x_x

28. anonymous

sorry I just am really confused

29. anonymous

OKAY... Cross multiply... You know how to do that right?

30. anonymous

ya

31. anonymous

$5(3y-8) =12y$

32. anonymous

Solve that.

33. anonymous

You get \15y - 40 = 12y\]

34. anonymous

k

35. anonymous

$15y - 40 =$

36. anonymous

12y

37. anonymous

You get the 40 cause you cross multiplied 5 to 8.

38. anonymous

yes

39. anonymous

Can you solve form here? Or no.

40. anonymous

would I subtract 15y to isolate the y on the on the 12y side?

41. anonymous

Move the 12y over to the 15y. To get $15y -12y = 40$

42. anonymous

ok

43. anonymous

Solver it. Which is simple $3y = 40$

44. anonymous

Move the 3 back to the 40 to make the faction.

45. anonymous

ok so now I just subtract 3 from both sides to get y=37?

46. anonymous

40/3

47. anonymous

No.

48. anonymous

The faction is 40/3

49. anonymous

ok nm I just saw your other posts

50. anonymous

The answer is $40/3 or 13.33$

51. anonymous

k

52. anonymous

either one. 13.33 is 40/3 as a decimal.

53. anonymous

Thank you and I am sorry that I was such a pain

54. anonymous

3y-8/12 = y /5 5( 3y - 8) = 12y 15y -40 =12y 15y -12y =40 3y=40

55. anonymous

That just to show the math.

56. anonymous

And it's fine, anything to help. It's what I'm here for ;)