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

    Jun 7, 2012, 07:13 PM
    solve using the substitution method
    y=6-x
    2x-3y=22
    cyber_i9's Avatar
    cyber_i9 Posts: 9, Reputation: 1
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    #2

    Jun 19, 2012, 08:09 AM
    its simple,
    given,
    y=6-x --------- be eq(1).
    2x-3y=22 ---------be eq(2).

    now substitute y in eq(2)
    i.e, 2x-3(6-x)=22
    :- 2x-18+3x=22
    :- 5x=40
    :- x=8.
    now substituting the x value in eq.(1) to get the value of y.
    i.e, y=6-8
    ==== y=2.
    therefore by solving the equations we get
    x = 8 and y = 2.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #3

    Jun 19, 2012, 09:14 AM
    Quote Originally Posted by cyber_i9 View Post
    i.e, y=6-8
    ==== y=2.
    Actually 6 minus 8 equals negative 2.
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