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    KaiStriegel's Avatar
    KaiStriegel Posts: 1, Reputation: 1
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    #1

    Oct 19, 2009, 06:40 PM
    Math Algebra Equations
    What's the answer to 2y+18=12-6(y+7)
    Clough's Avatar
    Clough Posts: 26,677, Reputation: 1649
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    #2

    Oct 19, 2009, 06:46 PM
    Hi, KaiStriegel!

    This is a site where you can get help with trying to figure out answers to homework questions. But, it's not one where you can simply put in a homework problem and expect to get an answer without you showing what you've already done to come up with the answer yourself.

    If students were just given the answers without knowing how to come up with the answers themselves, how would that be helping the students to learn?

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    Ask Me Help Desk - Announcements in Forum : Homework Help

    Thanks!
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #3

    Oct 20, 2009, 04:08 AM

    Well, the first step is to expand the brackets. Then, make sure all the terms in y are on the same side, and the other terms on another. Post your work, to see how you are getting with it.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #4

    Oct 20, 2009, 04:59 AM

    2y+18=12-6(y+7)

    count y's: 2 = -6; move left ---> 8y =

    count #'s: 18 = 12 - 42 ; move right = 12 - 42 -18

    8y = 12-42-18

    Your turn.

    The method reduces mistakes due to signs
    mathwiz3502's Avatar
    mathwiz3502 Posts: 121, Reputation: 1
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    #5

    Oct 25, 2009, 03:19 PM

    You simply use inverse operations
    2y+18=12-6(y+7)
    add 6(y+7)
    2y+18+6(y+7)=12
    distributive property
    2y+18+6y+42
    simplify
    8y+60=12
    subtract 60
    8y=-48
    divide by 8
    y=-6
    or
    8y=12-42-18
    8y=-48
    y=-6
    pretty simple
    jelyan's Avatar
    jelyan Posts: 2, Reputation: 1
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    #6

    Nov 1, 2009, 02:58 AM

    how to solve this equation using completing the square x²-2x-5=0 with solution plzz help meeeeeee
    jelyan's Avatar
    jelyan Posts: 2, Reputation: 1
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    #7

    Nov 1, 2009, 03:00 AM
    Quote Originally Posted by KaiStriegel View Post
    Whats the answer to 2y+18=12-6(y+7)
    :confused:
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #8

    Nov 1, 2009, 03:38 AM

    Create your own thread jelyan.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #9

    Nov 1, 2009, 06:50 AM

    Jelyn: You just have to finish post #4, which isn't hard. Add a few numbers and divide them by 8.

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