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anonymous

  • one year ago

Simplify:

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  1. anonymous
    • one year ago
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    @Michele_Laino

  2. anonymous
    • one year ago
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    |dw:1433349942046:dw|

  3. Michele_Laino
    • one year ago
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    what is the least common multiple among 2, 3 and 5?

  4. anonymous
    • one year ago
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    20?

  5. Michele_Laino
    • one year ago
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    no, it is 2*3*5=... since 2, 3 and 5 are all prime numbers

  6. anonymous
    • one year ago
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    30

  7. Michele_Laino
    • one year ago
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    ok! Now what is 30/2=...?

  8. anonymous
    • one year ago
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    15

  9. Michele_Laino
    • one year ago
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    ok! so the firs term is 15* numerator = 15*x: \[\frac{{15x + ... + ...}}{{30}}\]

  10. Michele_Laino
    • one year ago
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    now what is 30/5=...?

  11. anonymous
    • one year ago
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    6

  12. Michele_Laino
    • one year ago
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    ok! so the second term is 6*numerator of second fraction = 6*x: \[\frac{{15x + 6x + ...}}{{30}}\]

  13. Michele_Laino
    • one year ago
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    now, what is 30/3=...?

  14. anonymous
    • one year ago
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    10

  15. Michele_Laino
    • one year ago
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    ok! so the third term is: 10*numerator of the thired fraction= 10*x: \[\frac{{15x + 6x + 10x}}{{30}}\]

  16. Michele_Laino
    • one year ago
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    third*

  17. Michele_Laino
    • one year ago
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    finally: what is 15x+6x+10x=...?

  18. anonymous
    • one year ago
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    31x?

  19. Michele_Laino
    • one year ago
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    perfect! So the simplified form of your expression is: \[\frac{{15x + 6x + 10x}}{{30}} = \frac{{31x}}{{30}}\]

  20. anonymous
    • one year ago
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    thank you ^.^

  21. anonymous
    • one year ago
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    and i have eight more question if you have time plz help

  22. Michele_Laino
    • one year ago
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    ok!

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