Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

haloom1

  • 3 years ago

what is -5/11--5/7

  • This Question is Closed
  1. unkabogable
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    is it: |dw:1352573819063:dw|

  2. haloom1
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thank you, please can you explain

  3. amorfide
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    first of all you have a double negative these change to a plus sign

  4. amorfide
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    next you want to get the same denominator to do this |dw:1354103093726:dw|

  5. amorfide
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1354103213183:dw|basically the fish type thing represents what is being multiplied so for example lets say we have two fractions a/b + c/d |dw:1354103176755:dw| to add them the general method is to do (ad +bc)/bd

  6. amorfide
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    do you understand?

  7. zordoloom
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You would have to find a common denominator first.

  8. zordoloom
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Do you still need help?

  9. amorfide
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    following the method I explained gives a common denominator @zordoloom

  10. jazy
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1354106538781:dw|\[-\frac{ 5}{ 11 } + \frac{ 5 }{ 7 }\]Find a least common factor of 7 & 11 to find the LCD. Factors of 11: 11, 22, 33, 44, 55, 66, 77 Factors of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77 Least common factor is 77. 11 times 7 = 77 so multiply both the numerator and denominator by 7. \[\frac{ -5 }{ 11 } \times7 = -\frac{35 }{77 }\] 7 times 11 = 77 so multiply both the numerator and denominator by 11. \[\frac{ 5 }{ 7 } \times 11 = \frac{ 55 }{ 77 }\] NOW you can add the fractions: \[-\frac{ 35 }{ 77 } + \frac{ 55 }{ 77 } = \frac{ (-35 + 55) }{ 77 } = \frac{ 20 }{ 77 }\] So: \[-\frac{ 5}{ 11 } + \frac{ 5 }{ 7 }\ =\frac{ 20 }{ 77 }\]

  11. jazy
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @haloom1

  12. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy