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sommersquid

  • 2 years ago

What is the value of the x variable in the solution to the equations? 3x + 2y = 6 2x + 3y = −1

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  1. across
    • 2 years ago
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    Multiply the first equation by 3, multiply the second equation by -2, add the two results, and solve for x.

  2. satellite73
    • 2 years ago
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    hello across!!

  3. sommersquid
    • 2 years ago
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    why do you use 3 and -2? :/

  4. across
    • 2 years ago
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    If you do it, then you'll see why I used those numbers.

  5. satellite73
    • 2 years ago
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    @sommersquid trust @across

  6. sommersquid
    • 2 years ago
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    okay, lolol lemme do it

  7. sommersquid
    • 2 years ago
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    |dw:1347938820694:dw|

  8. sommersquid
    • 2 years ago
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    thats what i got for both

  9. sommersquid
    • 2 years ago
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    what do i do now?...

  10. across
    • 2 years ago
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    So you got\[\begin{align}9x+6y&=18\\-4x-6y&=2\end{align}\]Now add them:\[5x=20\]Can you solve for \(x\)?

  11. sommersquid
    • 2 years ago
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    yes x = 4 :) thank you so so much :3

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