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Math Help - algebra help please

  1. #1
    Junior Member
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    Smile algebra help please

    solve by substitution 8x-4y = 16
    y = 2x-4
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  2. #2
    Senior Member OReilly's Avatar
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    Quote Originally Posted by lizard4 View Post
    solve by substitution 8x-4y = 16
    y = 2x-4
    They are identical equations.
    8x-4y=16 is (when divided by 4) 2x-y=4 or y=2x-4
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