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julie001

  • 2 years ago

X+5 over 3 = x-3 over 4

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  1. gaara438125
    • 2 years ago
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    i posted this in the other than, does it look like this? \[\frac{ x + 5 }{ 3 } = \frac{ x - 3 }{ 4 }\]

  2. dylan18
    • 2 years ago
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    what can we do with that?

  3. julie001
    • 2 years ago
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    Yes

  4. gaara438125
    • 2 years ago
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    find x?

  5. julie001
    • 2 years ago
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    Common denominator rite?

  6. dylan18
    • 2 years ago
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    ahhhhhhh!!

  7. gaara438125
    • 2 years ago
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    hahahahaha julie u are truely smart :]

  8. gaara438125
    • 2 years ago
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    so the lcd is obviously 12 which gets us?

  9. julie001
    • 2 years ago
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    Im lost

  10. gaara438125
    • 2 years ago
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    ok so the Least common denominator of 3 and 4 is 12 so you have to multiply \[\frac{ x + 5 }{ 3 } * \frac{ 4 }{ 4 }\]

  11. julie001
    • 2 years ago
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    20x over 12?

  12. dylan18
    • 2 years ago
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    yah. that rite.

  13. gaara438125
    • 2 years ago
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    no \[\frac{ 4x + 20}{12}\] but i see where you could have done the 20x

  14. julie001
    • 2 years ago
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    Ooo wats nxt?

  15. dylan18
    • 2 years ago
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    i mean the solution @gaara438125

  16. gaara438125
    • 2 years ago
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    so the other side then becomes\[\frac{ 3x - 9 }{ 12 }\] because we do \[\frac{ x - 3 }{ 4 } * \frac{ 3 }{ 3 }\] so it looks like \[\frac{ 4x + 20 }{ 12 } = \frac{ 3x - 9 }{ 12 }\]

  17. gaara438125
    • 2 years ago
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    multiply both sides by 12 to get what?

  18. julie001
    • 2 years ago
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    Idk hw to do that

  19. gaara438125
    • 2 years ago
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    since both sides are being divided by 12 you can multiply BOTH sides to rid of the fraction leaving only \[4x + 20 = 3x - 9\]

  20. julie001
    • 2 years ago
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    Do i combine like terms

  21. gaara438125
    • 2 years ago
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    yes :] you are very smart i think your just not trying ;P

  22. julie001
    • 2 years ago
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    I got it thanks ;)

  23. gaara438125
    • 2 years ago
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    ok good

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