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automaticloveletter

  • one year ago

Ellason wants to solve the following system using the elimination method: 5x + 2y = 30 x + y = 8 What number should the equation x + y = 8 be multiplied by to eliminate y? 2 −2 5 −5

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  1. mathstudent55
    • one year ago
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    What is the y term of the first equation?

  2. automaticloveletter
    • one year ago
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    2

  3. anonymous
    • one year ago
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    Since the value of y in the first equation is 2, we can multiply the opposite of 2 to the second equation to eliminate y. So what is the opposite of 2?

  4. mathstudent55
    • one year ago
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    Actually, 2y. What is the y-term of the second equation?

  5. automaticloveletter
    • one year ago
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    -2?

  6. anonymous
    • one year ago
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    yes -2

  7. anonymous
    • one year ago
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    so that is your correct answer :)

  8. mathstudent55
    • one year ago
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    What is the y-term of the second equation? It is just y. When you add 2y to -2y you get zero and the y-terms will be eliminated. If you multiply the second equation by -2, the y-term of the second equation will become -2y. Then when you add equations, the y-terms will be eliminated.

  9. mathstudent55
    • one year ago
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    You are correct.

  10. automaticloveletter
    • one year ago
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    thanks guys :)

  11. anonymous
    • one year ago
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    np :)

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