A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

genny7

  • one year ago

Help! Please! -8-4-(-2)-(+2)(-3)

  • This Question is Closed
  1. MrNood
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    first you must put any 'minus' signs inside the brackets they refer to. Rewrite the sum with the brackets evaluated...

  2. MrNood
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    (btw - have you missed out a + or - between the last 2 brackets?)

  3. genny7
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    This is order of operations

  4. MrNood
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    and first is B for brackets so do what I suggested first

  5. genny7
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @MrNood Im stuck

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    It can either be PEDMAS or BEDMAS P = Parentheses B = Bracket

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

  8. genny7
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Okay but i keep getting -16 & in my book it has a different answer

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -8-4-(-2)-(+2)(-3) so using the rules we see that ((+2)(-3) would come first

  10. genny7
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes and that would be -6 right

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so then you have -8-4-(-2)-(-6)

  12. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    right now do the multiplication of -1*(-2) and -1*(-6)

  13. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so that should give you -8-4+2+6

  14. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    from there you can just do -8-4 = -12 and 2+6 = 8 and add the results together

  15. genny7
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Okay i think i got it from there

  16. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    This is an "order of operations" problem. In this case, the parentheses are here for only two reasons: 1) to separate a negative sign from an addition sign 2) to show a product Using PEMDAS, you can skip PE, and go right to MDAS which means the following: MD - multiplications and divisions in the order they appear from left to right AS - additions and subtractions in the order they appear from left to right \(-8-4-(-2)-(+2)(-3)\)

  17. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \(-8-4-(-2)-\color{red}{(+2)(-3)}\) The operation shown in read above is a multiplication, so it has to be done first. \(= -8-4-(-2)-\color{red}{(-6)}\) Now all you have left is subtractions, so do them in order from left to right, one at a time. \(= -8-4-(-2)-(-6)\) \(= -12-(-2)-(-6)\) \(= -10-(-6)\) \(= -4\)

  18. 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

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.