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TuringTest

on behalf of @jrzyby1 solve the system x+4y-z=3 (1) x+5y-2z=5 (2) 3x+12y-3z=9 (3)

  • one year ago
  • one year ago

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  1. lgbasallote
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    x + 4y - z = 3 x + 5y - 2z = 5 subtract the equations 9y + z = -2 <-- (4)

    • one year ago
  2. UnkleRhaukus
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    times the first equation by three, then find the difference with the third equation

    • one year ago
  3. UnkleRhaukus
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    (1),(3) are the same

    • one year ago
  4. UnkleRhaukus
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    infinite solutions

    • one year ago
  5. emcwhat
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    Since 1 and 3 are the same, aren't there an infinite number of solutions?

    • one year ago
  6. lgbasallote
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    hmm yep equation 1 and 3 wont intersect

    • one year ago
  7. jrzyby1
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    gotcha.

    • one year ago
  8. UnkleRhaukus
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    there is an infinite line of solutions

    • one year ago
  9. jrzyby1
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    I wass't sure and I tried to put the second equation into the first to see if it could be worked, hence the origin of all this. lol

    • one year ago
  10. jrzyby1
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    cool. thank you much

    • one year ago
  11. TuringTest
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    @jrzyby1 fyi to ask a new question you will have to close your old post (which I think you left open)

    • one year ago
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