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anonymous

  • one year ago

x x-4 _ = ____ 2 3

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  1. PhantomCrow
    • one year ago
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    Are you asked to solve for x?

  2. PhantomCrow
    • one year ago
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    If this is a proportion, then first cross multiply and then solve for x.\[\frac{ x }{ 2}=\frac{ x-4 }{ 3 }\]\[3x=2(x-4)\]\[3x=2x-8\]

  3. anonymous
    • one year ago
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    yeah

  4. PhantomCrow
    • one year ago
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    See where you go from there.

  5. anonymous
    • one year ago
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    this is the part where i get confused

  6. PhantomCrow
    • one year ago
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    Alright. Just use algebra to solve for x from this point\[3x=2x-8\]\[x=-8\]

  7. PhantomCrow
    • one year ago
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    It's a matter of isolating x via inverse operation.

  8. anonymous
    • one year ago
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    where did the 2x go? what did you do to get rid of the 2x

  9. PhantomCrow
    • one year ago
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    I subtracted it from both sides. I'm trying to get to equal to something and that wont happen if the x's are on different sides of the equation. Since 2x was positive, I perform the opposite of it (subtraction) to both sides, thus cancelling it on the right and subtracting it from 3x on the left.

  10. PhantomCrow
    • one year ago
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    Are you familiar with solving one variable equations?

  11. anonymous
    • one year ago
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    ohhh I was over thinking it thank you so much !!!

  12. PhantomCrow
    • one year ago
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    No problem.

  13. anonymous
    • one year ago
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    ohhh I was over thinking it thank you so much !!!

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spraguer (Moderator)
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