Chapter 5: Algebra... Different "Faces" of Algebra (I)

The total length of 4 roads is (3x - 1) km. What are the possible lengths of the 4 roads in kilometres?

e.g. The length of the 4 roads are: x km, x km, x-7 km, 6 km
Check: x + x + (x - 7) + 6 = 3x - 1
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29 comments:

  1. Mervin4/21/2011 10:42:00 AM

    1/2x, 1/2x, 1/2x, 1.5x - 1

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  2. Dexter Lim4/21/2011 10:42:00 AM

    3x-4,1,1,1
    (3x-4)+1+1+1

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  3. Mitsunari Ishida4/21/2011 10:42:00 AM

    x-1, 3/4x, 1/4x, x

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  4. Cowan Ho4/21/2011 10:42:00 AM

    Another possible lengths are, x km, x/2 km, x/2 km, x-1 km

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  5. Eugene Voo4/21/2011 10:43:00 AM

    The length of the 4 roads are: 5km, 5km, 4km and 3km, saying that x=6km

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  6. Kashyap shroff4/21/2011 10:43:00 AM

    This comment has been removed by the author.

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  7. Matthew Goh4/21/2011 10:43:00 AM

    The length of the 4 roads are: x km, x km, x-8 km, 7 km
    Check: x + x + (x - 8) + 7 = 3x - 1

    ReplyDelete
  8. Tay Ming Yi4/21/2011 10:43:00 AM

    The length of the 4 roads are x km, x+9km , x-10km, x km

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  9. siddharth gohil4/21/2011 10:43:00 AM

    This comment has been removed by the author.

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  10. Ben Ng (吴政南）4/21/2011 10:43:00 AM

    This comment has been removed by the author.

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  11. Akhila4/21/2011 10:44:00 AM

    The length of the 4 roads are 1 1/2x-1 , 1/2x ,1/2x ,1/2x

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  12. Kaung Myat Thu4/21/2011 10:44:00 AM

    x-6, x+1,1/2x + 1 1/2, 1/2x + 2 1/2

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  13. ~Jia En~4/21/2011 10:45:00 AM

    1/2x-1 + 1/2x +x + x

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  14. Dawn4/21/2011 10:45:00 AM

    (3x-1)/4 , (3x-1)/4, (3x-1)/4, (3x-1)/4

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  15. Ryan Yeo4/21/2011 10:46:00 AM

    [x+x+(x-100000000000000000000)+99999999999999999999]km

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  16. siddharth gohil4/21/2011 10:46:00 AM

    1/2x, 1/2x, x + 1, 1.5x

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  17. Joshua Tan4/21/2011 10:47:00 AM

    This comment has been removed by the author.

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  18. siddharth gohil4/21/2011 10:47:00 AM

    1/2x, 1/2x, x - 1, 1.5x

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  19. luke-john lee4/21/2011 10:48:00 AM

    x, x-1, 1/2x and 1/2x

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  20. Devanshi4/21/2011 10:49:00 AM

    This comment has been removed by the author.

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  21. Anonymous4/21/2011 10:49:00 AM

    1x, 1x, 0.9x

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  22. Ben Ng (吴政南）4/21/2011 10:49:00 AM

    1/4x + 3/4x + 3x + x-1

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  23. siddharth gohil4/21/2011 10:49:00 AM

    1/2x, 1/2x, x - 1, 2.5x

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  24. Daniel4/21/2011 10:49:00 AM

    1/3x + 2/3x + x-0.5 + 2x

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  25. Joshua Tan4/21/2011 10:49:00 AM

    x+x+(-x+1)+x

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  26. Ryan Sio4/21/2011 10:50:00 AM

    x, x-1, 1/2x, 1/2x

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  27. Devanshi4/21/2011 10:50:00 AM

    2x+1/2x+1/2x+x-1

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  28. Amelia Pang4/21/2011 10:50:00 AM

    x, x, x-2, 1

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  29. Christabel~♥^^4/21/2011 10:53:00 AM

    2x, 3/8x, 5/8x, 1/8x-(8-1), 6

    ReplyDelete

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