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

    Mar 1, 2010, 08:14 PM
    I'm having some difficulty with substitution Method on these 4 problems please show me
    m having some difficulty with substitution Method on these 4 problems
    please show me how to do them!
    10 points

    y=-12x+387
    x+-1/3y+30

    y=8/9x+30
    y=-4x-14

    11x-3y=-24
    x+2y/2=8

    138= 138/11y + 828/187x
    y=-2x-45
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #2

    Mar 1, 2010, 08:41 PM

    I'll pick one:

    y=8/9x+30
    y=-4x-14

    -4x -14 = 8/9x +30

    Can you do it? Try?
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