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Math Help - How would I simplify these equation?

  1. #1
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    How would I simplify these equation?

    Really confused. I'm a online student and the instructor taught us how to do this but she didn't use these type of equations so I'm really lost.


    -4 (3-7) + 2^2 (-6)

    -3 + 3 (5-12)

    6 + =
    Last edited by deekay930; December 13th 2009 at 10:14 PM.
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  2. #2
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by deekay930 View Post
    Really confused. I'm a online student and the instructor taught us how to do this but she didn't use these type of equations so I'm really lost.


    -4 (3-7) + 22 (-6)

    -3 + 3 (5-12)

    6 + =
    Do the parentheses first. Then perform the multiplications. Lastly, add orr subtract.

    I'll do the first for you.

    1. Parentheses

    -4(-4)+22(-6) because 3-7=-4

    2. Multiply

    +16-132 because a negative times a negative gives a positive.

    4. Add/Subtract

    -116

    Have you ever heard of P.E.M.D.A.S.?
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  3. #3
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    so like this?

    -3 + 3 (5-12)

    (5-12)= -7

    3(-7)= -21

    3+-21= -18

    ??

    Yes, I understand the order of operations.
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  4. #4
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by deekay930 View Post
    so like this?

    -3 + 3 (5-12)

    (5-12)= -7

    3(-7)= -21

    -3+-21= -24

    ??

    Yes, I understand the order of operations.
    Very good, but you forgot the negative in front of the 3. The correction si made in red.
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  5. #5
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    Quote Originally Posted by VonNemo19 View Post
    Do the parentheses first. Then perform the multiplications. Lastly, add orr subtract.

    I'll do the first for you.

    1. Parentheses

    -4(-4)+22(-6) because 3-7=-4
    I'm sorry that was suppose to be : -4(-4)+2^2(-6)
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  6. #6
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    Quote Originally Posted by VonNemo19 View Post
    Very good, but you forgot the negative in front of the 3. The correction si made in red.

    Thanks so much.
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  7. #7
    Super Member Bacterius's Avatar
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    Quote Originally Posted by deekay930 View Post
    I'm sorry that was suppose to be : -4(-4)+2^2(-6)
    You know that 2^2 = 4, so just replace it by 4
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  8. #8
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    Quote Originally Posted by Bacterius View Post
    You know that 2^2 = 4, so just replace it by 4
    So the answer would be -8?
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  9. #9
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by deekay930 View Post
    So the answer would be -8?
    Yes indeed!
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