## anonymous 5 years ago what is 5/6 +5 -4/8= i am lost with that

1. anonymous

yes it is

2. anonymous

ok so first let's try reducing the individual parts, e.g. -4/8 = -1/2

3. anonymous

so now you want to find the lowest common denominator for 5/6, 5, and -1/2

4. anonymous

to me that looks like 6

5. anonymous

so now you want to convert everything to sixths so you can add them up

6. anonymous

so 5/6 is done

7. anonymous

5 = 5*6/6 = 30/6

8. anonymous

and -1/2 = -1/2 * 3/3 = -3/6

9. anonymous

so now let's add it up: 5/6 +30/6 -3/6 = (5+30-3)/6 = 32/6

10. anonymous

now you want to reduce that fraction, so again we need a common divider

11. anonymous

looks like the only common divisor is 2

12. anonymous

so 32/6 = 16/3

13. anonymous

now if you want to , you can change that into a mixed fraction

14. anonymous

so 16/3 = 15/3 + 1/3 = 5 and 1/3

15. anonymous

ok i am back

16. anonymous

hey! wb

17. anonymous

did that make sense?

18. anonymous

srry my cumputer is giving me problemes agine yes it did thanx

19. anonymous

ok great =)

20. anonymous

the basic point is, anything x 1 = the same thing

21. anonymous

so you can always multiple by various forms of 1 to get a common denominator

22. anonymous

ok

23. anonymous

so in the above, since I decided we needed a 6 on the bottom of all the fractions (common denominator), I multiplied 5 by 6/6 , and -1/2 by 3/3

24. anonymous

to get 30/6 and -3/6

25. anonymous

to reduce fractions, you're still essentially multiplying by 1

26. anonymous

so to reduce 32/6, I divided both the top and bottom by 2

27. anonymous

how dothen do u flip it

28. anonymous

sorry then do u flip it

29. anonymous

so how do you mean flip it

30. anonymous

reducing fractions is still multiplying (or dividing if you will) by 1

31. anonymous

just you're making the numbers smaller instead of bigger

32. anonymous

32 is on top then 6 is on the bottem you flip it to were the 6 is on top and the 32 is on the bottem

33. anonymous

in reality, it's easiest to think "if I divide both the top and bottom of the fraction by the same thing, it will still be equivalent"

34. anonymous

oh ok that make senc

35. anonymous

i am not good at math

36. anonymous

it's ok, nobody starts out good at math. takes lots of practice and not giving up on it

37. anonymous

so let's do another example: reduce 48/12

38. anonymous

ok

39. anonymous

your thought process should be: "what is the biggest number that evenly divides into both the top and the bottom"

40. anonymous

and then do that

41. anonymous

and it's ok if you don't know off the top of your head what the biggest number is

42. anonymous

that also comes with practice

43. anonymous

but you at least know in the above case, since bot the top and bottom are even, you can divide both of them by 2

44. anonymous

so go ahead and try to reduce 48/12

45. anonymous

I'll do a first step

46. anonymous

48/12 = (48/2) / (12/2) = 24/6. I know that's true because I divided by 2/2, which is 1, and anyting divided by 1 = itself

47. anonymous

ok that is what i got to

48. anonymous

ok, now the next question you should ask yourself is if there is another number you can divide 24/6 by to get a smaller fraction - by smaller I mean smaller numbers on the top and bottom

49. anonymous

that process is called reducing

50. anonymous

i am geting so made at my comeputer right know

51. anonymous

if i log out agine i will get back on ok it is my computer

52. anonymous

ok np

53. anonymous

we can divide 2 in to 24 and 6

54. anonymous

oh nvm not six

55. anonymous

and if it seems i am not i am i just in a livsseion i go to flvs

56. anonymous

but i will tell you be for i go tho ok

57. anonymous

kk, well you were actually right - you *can* divide both 24 and 6 by 6 =)

58. anonymous

so I would do that

59. anonymous

it would come ou to be 4/1

60. anonymous

i think not sure tho

61. anonymous

you're right =) . and 4/1 is actually 4

62. anonymous

good work =)

63. anonymous

so how would you check to see if you're right?

64. anonymous

an easy way to check is with a calculator

65. anonymous

is 48/12 = 4/1 = 4?

66. anonymous

ok thanx you vary much

67. anonymous

no problem!

68. anonymous

so just remember - you can always multiply the top and the bottom by the same thing, to get an equivalent fraction. that's useful for getting a common denominator to make adding/subtracting fractions easier

69. anonymous

and that's because you're *Actually* just multiplying by 1

70. anonymous

ok the way my techer did it was confusing

71. anonymous

and anything times 1 is the same exact thing, just written in a different way

72. anonymous

now when you're "reducing" fractions, all you're trying to do is get the top and bottom numbers as small as possible

73. anonymous

for that, you can always divide both the top and bottom by the same thing, to get an equivalent fraction

74. anonymous

know with that rule does it count with 0 to

75. anonymous

since in reality, you're just dividing tat number by 1

76. anonymous

and anything divided by 1 is the same thing, just written in a different way

77. anonymous

well, you can't divide by 0

78. anonymous

or else the world explodes =)

79. anonymous

ok @};-

80. anonymous

is open study only for math

81. anonymous

that I know of

82. anonymous

well, I think there's another UI they have

83. anonymous

but that's over at openstudy.com, and I don't think the logins are shared

84. anonymous

I like this one more

85. anonymous

ok i think it should make it for all subjegs but i guess it dos not relly matter tho

86. anonymous

what else are you taking?

87. anonymous

i am taking teck math langue arts chess and on the side i am lourning chines japens spanish french

88. anonymous

i mean tech for cumputers

89. anonymous

nehow

90. anonymous

means hello in chines

91. anonymous

2 to 4 i have a chess compition

92. anonymous

oh awesome =)

93. anonymous

that's a lot!

94. anonymous

yea but in reality i should lour alot more cuz i mean i am not big on politics but ii do know alot about how most school seystem r laking on some eguoction

95. anonymous

my friend is in 8th he deos not know anthing but it is also the pareints to not all on the schools

96. anonymous

the schools can only teach so much in won day and they can not stay on won topec for long

97. anonymous

i am not going to lie i use to be won of thos kide who were like when am i ever going to use any of this stuff but in reality u use it all the time

98. anonymous

even if you relis it or not

99. anonymous

haha yeah agree, it's definitely really useful in the end