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Math Help - solve

  1. #1
    Newbie planolerachel's Avatar
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    solve

    I have a problem that I am in need of assistance with.

    Here it goes...

    7y-2(y-7)=11y-(7y+10)

    I think I solve it like this

    7y(y-7)=7y^2+49
    2(y-7)= 2y+14

    then move the minus sign to inside of the parentheses so the other side will look like so.

    11y-7y-10

    my problem then looks like this
    7y^2+45-2y = 11y-7y-10

    then combine like terms
    7y^2+45-2y=4y-10

    is this correct??
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  2. #2
    Master Of Puppets
    pickslides's Avatar
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    Quote Originally Posted by planolerachel View Post
    I have a problem that I am in need of assistance with.

    Here it goes...

    7y-2(y-7)=11y-(7y+10)

    I think I solve it like this

    7y(y-7)=7y^2+49
    2(y-7)= 2y+14

    then move the minus sign to inside of the parentheses so the other side will look like so.

    11y-7y-10

    my problem then looks like this
    7y^2+45-2y = 11y-7y-10

    then combine like terms
    7y^2+45-2y=4y-10

    is this correct??

    7y-2(y-7)=11y-(7y+10)

    expand the brackets gives

    7y-2y+14=11y-7y-10

    simplify each side

    5y+14=4y-10

    group y terms on one side and constant terms on the other

    5y-4y=-10-14

    and finally

    y=-28
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  3. #3
    Newbie planolerachel's Avatar
    Joined
    Mar 2009
    Posts
    12

    Wink thank you

    I knew I wasn't doing something right.. I appreciate your help.
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  4. #4
    Master Of Puppets
    pickslides's Avatar
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    Quote Originally Posted by planolerachel View Post
    I knew I wasn't doing something right.. I appreciate your help.

    I appreciate the thanks!
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