Wednesday, 25 March 2015

Algebra (II): Where's the Error?

29 comments:

  1. Is should be 4y-x and 16x-80y on L3 as the change has not taken place yet.

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  2. On Line 3, it should be 4y-x and 16x-80y.

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  3. It should be '4y-x' instead of '4y+x' and '16x-80y' instead of '16x+80y' on line 3.

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  4. On line 3, on the second fraction it should be 4y-x/12 and the third fraction should be 16x-80y/12

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  5. On line 3, it should be '4y-x' instead of '4y+x' and '16x-80y' instead of '16x+80y'.

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  6. on line 3 the 4y+x/12 should be 4y-x/12 and the 16x+80y/12 should be 16x-80y/12

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  8. This comment has been removed by the author.

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  10. On line 2, it should be 4x +20y instead of 4x-20y
    It should be 4y-x on line 3
    It is not simplified

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  11. It should be 4y-x instead of 16x-80y on line 3

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  12. ON line 3, the last term should be 16x-80y/12 not 16x+80y/12 as when converting to same denominator the signs do not change.
    ON line 4, the fourth term should be -x instead of plus x

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  13. LVL 3 the 16x+80y/12 should be 16x-80y/12
    LVL 4 the term should be -x instead of +x

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  14. LVL 3 the 16x+80y/12 should be 16x-80y/12
    LVL 4 the term should be -x instead of +x

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  15. The 16x+80y divided by 12 is supposed to be 16x-80y divided by 12

    On line 4, it should be -x instead of +x

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  16. On line 3, it should be -80y and not +80y

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  17. L3 its supposed to be 16x-80y over 12
    L4 its supposed to be -x and not +x

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  18. On Line 3, it should be 4y-x and 16x-80y.

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  19. On Line 3, it should be 4y-x and 16x-80y.

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  20. on the numerator of the second and third fractions on the second line, it should be -, not +

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  21. It should be '4y-x' not '4y+x' and '16x-80y' instead of '16x+80y' on line 3.

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  22. It should be '4y-x' not '4y+x' and '16x-80y' instead of '16x+80y' on line 3.

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  23. Line 3. Supposed to be 4y-x and 16x-80y. Not 4y+x and 16x+80y.

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  24. Line 3, should be 4y-x/12 and 16x-80y/12

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  25. Mistake:

    The mistake is in Line 3 as an operation sign error. The negative signs of -x and -20 have changed into positive signs. The signs should not be changed, as the equation does not require changes.

    Correct Answer:

    Line 3: 6x - 18y / 12 - 4y - x / 12 - 16x - 80y / 12
    Line 4: 6x - x - 16x - 18y - 4y - 80y / 12
    Line 5: -11x + 102y / 12

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  26. line 3 and 4 the 4y+x and 16x+80y should be 4y-x and 16x-80y respectively
    and the final answer should be -11x+102y
    ---------------
    12

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    Replies
    1. as for the final answer I meant -11x+102y/12

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