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

    Aug 25, 2014, 04:27 PM
    how do you solve system of equations using substitution?
    2x+3y=5
    x-5y=9
    pready's Avatar
    pready Posts: 3,197, Reputation: 207
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    #2

    Aug 25, 2014, 05:38 PM
    First use X - 5Y = 9

    X = 5Y + 9

    Now put 5Y + 9 in place of the X in the other equation; now
    2(5Y + 9) + 3Y = 5

    Now solve for Y.

    When you get your answer for Y you can solve for X.
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