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    Frankie112's Avatar
    Frankie112 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 12, 2009, 06:23 PM
    Math Alg2 trig
    I need help with this equation
    4x=15+x
    5=2y-1

    Now I've watched other videos but they all seem to have the same varible like
    4x+6y=17
    3x-3y=15

    But I cannot find how to do that one, because the first equation doesn't have a y vairble and the second equation doesn't have an x varible
    ROLCAM's Avatar
    ROLCAM Posts: 1,420, Reputation: 23
    Ultra Member
    		  
    #2

    Oct 12, 2009, 07:33 PM

    I need help with this equation
    4x=15+x
    5=2y-1

    These are simpler still.

    1)
    4x = 15 + x
    4x - x = 15
    3x = 15
    x = 5
    ______________________________________

    2)
    5=2y-1
    5 + 1 = 2y
    2y = 6
    y = 3

    ______________________________________
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