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    ygshortround's Avatar
    ygshortround Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jun 4, 2009, 09:07 AM
    solve for n
    -7(n+9)-(7+2n)=-10n
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Jun 4, 2009, 09:10 AM

    First, expand;





    Then, move all the terms in n on the same side;



    Can you take it from there?

    Your answer should be 70
    De4rest's Avatar
    De4rest Posts: 85, Reputation: 7
    Junior Member
    		  
    #3

    Jun 12, 2009, 03:09 PM

    Just multiply the number outside the parantheses with the one inside:

    -7n-63-7-2n = -10n

    Group the same number together (n with n and without n with without n):

    -9n -70 = -10 n

    Then, solve for n:
    -9n + 10 n (the sign change as you bring it to the other side) thus,

    -9n + 10n = 70
    n = 70
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #4

    Jun 12, 2009, 08:07 PM

    But... but... what's the pointof posting is the question is already more than a week old? And the question already answered? :confused:
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