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    floree's Avatar
    floree Posts: 5, Reputation: 1
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    #1

    Mar 25, 2008, 10:02 AM
    Elimination or substitution Equation
    Solve the following system by substitution or elimination

    2x-4y=3
    -3x+6y=7
    ISneezeFunny's Avatar
    ISneezeFunny Posts: 4,175, Reputation: 821
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    #2

    Mar 25, 2008, 10:14 AM
    Which one are you thinking of using?

    Why don't you try it out and we'll help you along the way.
    floree's Avatar
    floree Posts: 5, Reputation: 1
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    #3

    Mar 25, 2008, 11:33 AM
    I tried both elimination and substitution I got -x+27=10 for both solutions what did I do wrong?
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #4

    Mar 25, 2008, 12:08 PM
    Be careful. Not all systems have solutions.

    If we multiply the top one by 3 and the bottom one by 2, we get:





    Now add them and we get 0=23

    No solution
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