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anonymous

  • 5 years ago

|{ -x+y+2z=7 <|{ 2x-3y-2z=-4 |{ x -z=-2 possible answers are (3,3,5) (3,0,5) (-3,0,5) (3,0,-5)

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  1. anonymous
    • 5 years ago
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    the last one is the answer????

  2. anonymous
    • 5 years ago
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    or the one before the last

  3. anonymous
    • 5 years ago
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    ok lets see.

  4. anonymous
    • 5 years ago
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    last one doesn't work for lat equation. because 3-(-5) = 3+5 = 8

  5. anonymous
    • 5 years ago
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    third one doesn't work for last equation because -3-5=-8

  6. anonymous
    • 5 years ago
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    must be one of the first two. lets find it

  7. anonymous
    • 5 years ago
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    -3+3+10=7 <|{ 6-9-10=-4 |{ 3 -5=-2

  8. anonymous
    • 5 years ago
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    thats not it

  9. anonymous
    • 5 years ago
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    nope it is not first one

  10. anonymous
    • 5 years ago
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    -3+0+10=7 6-0-10=-4 3 5=-2

  11. anonymous
    • 5 years ago
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    must be (3,0,5)

  12. anonymous
    • 5 years ago
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    thats not it

  13. anonymous
    • 5 years ago
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    yes, late equation is x - z = -2 so 3-5=-2 is correct

  14. anonymous
    • 5 years ago
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    -3+0+10=7 6-0-10=-4 -3 5=-2

  15. anonymous
    • 5 years ago
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    -3+7=10 6-10=-4 3-5=-2

  16. anonymous
    • 5 years ago
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    the first one hast to be 7

  17. anonymous
    • 5 years ago
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    last equation is x - z = -2 you wrote -x+z

  18. anonymous
    • 5 years ago
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    no -5 cancelled out

  19. anonymous
    • 5 years ago
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    yes it is if you use x=3,y=0,z=5

  20. anonymous
    • 5 years ago
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    -3+0+2*5=-3+10=7

  21. anonymous
    • 5 years ago
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    yes?

  22. anonymous
    • 5 years ago
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    second equation is 2x-3y-2z = -4 we get 2*3-0-2*5=6-10=-4

  23. anonymous
    • 5 years ago
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    and third is x-z=-2 we get 3-5=-2

  24. anonymous
    • 5 years ago
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    so they all work for (3,0,5)

  25. anonymous
    • 5 years ago
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    your right i am going to choose yours

  26. anonymous
    • 5 years ago
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    good because it is true!

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