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Math Help - I am trying to solve this muti step equation can anyone help thank you

  1. #1
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    I am trying to solve this muti step equation can anyone help thank you

    3(2y+6) - 4(y-2) = 20
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  2. #2
    MHF Contributor MarkFL's Avatar
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    Re: I am trying to solve this muti step equation can anyone help thank you

    We are given to solve:

    3(2y+6)-4(y-2)=20

    Distribute the coefficients in front of the parentheses:

    6y+18-4y+8=20

    Now collect like terms on the left. Can you finish?
    Thanks from cocoa
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  3. #3
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    Re: I am trying to solve this muti step equation can anyone help thank you

    is this right
    thanks for your help

    6y + 18 - 4y + 8 = 20
    -6y + 18 -6y +8 = 20
    18 -10y + 8= 20
    -18 - 10y -18 = 20
    -10y-10 = 20
    +10y+10= 20
    y=20?
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  4. #4
    MHF Contributor MarkFL's Avatar
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    Re: I am trying to solve this muti step equation can anyone help thank you

    No. We have:

    6y+18-4y+8=20

    Group like terms together:

    (6y-4y)+(18+8)=20

    Now combine the like terms:

    2y+26=20

    All terms are divisible by 2, so divide every term by 2:

    y+13=10

    Subtract 13 from both sides:

    y=-3
    Thanks from cocoa
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  5. #5
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    Re: I am trying to solve this muti step equation can anyone help thank you

    oh ok I see what your doing and what I am doing wrong Thank you so so much I really appreciate your help Thanks again
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    Re: I am trying to solve this muti step equation can anyone help thank you

    hi cocoa,

    Please look up into your work steps. i found that the symbol of -/+ was changed without any movement across the equal (=).

    6y + 18 - 4y + 8 = 20
    -6y + 18 -6y +8 = 20
    Thanks from cocoa
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  7. #7
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    Re: I am trying to solve this muti step equation can anyone help thank you

    ok thank you
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    Re: I am trying to solve this muti step equation can anyone help thank you

    Hi Is this right....wow I am having so much trouble here, but thanks so much!!!!
    3(2y+6)-4(y-2)=20

    6y+18-4y+8=20


    (6y-4y)+(18+8)=20

    2y+26=20





    y+13=10



    y=-3
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  9. #9
    Newbie rudsdiey's Avatar
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    Re: I am trying to solve this muti step equation can anyone help thank you

    hi cocoa..
    i hope you understand every steps...
    for example:
    1. why 2y+26=20 need to be divided by 2
    2. how y+13=10 become y=-3

    cheers.....
    Thanks from cocoa
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  10. #10
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    Re: I am trying to solve this muti step equation can anyone help thank you

    Thank you yes I do understand this problem I hope I can continue thanks again
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  11. #11
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    Re: I am trying to solve this muti step equation can anyone help thank you

    this is what I think......thanks

    2 divided by 2y=y
    2divided by 26=13
    2 divided 20=10
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  12. #12
    MHF Contributor MarkFL's Avatar
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    Re: I am trying to solve this muti step equation can anyone help thank you

    I would state:

    2y divided by 2 is y
    26 divided by 2 is 13
    20 divided by 2 is 10

    This is because when you say x divided by y, this means x/y.
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  13. #13
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    Re: I am trying to solve this muti step equation can anyone help thank you

    right thanks soooooooooo much!!!!
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  14. #14
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    Re: I am trying to solve this muti step equation can anyone help thank you

    hi cocoa,

    why don't you practice to solve below question.

    3(3y+2) - 6(y-1) = 30


    cheers....
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