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Solmyr

  • 3 years ago

If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step? 5x − 6y = 6 x − y = 12 Add the two equations together Multiply the second equation by −6 Multiply the first equation by −6 Multiply the second equation by 6

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  1. kropot72
    • 3 years ago
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    You can arrive at the correct choice by seeing which choice gives the requires result (eliminate the y variable). Would adding the two equations together eliminate the y variable when -6y + (-y) = -7y ?

  2. Solmyr
    • 3 years ago
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    no

  3. kropot72
    • 3 years ago
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    Correct. Looking at the second choice, if you multiply the second equation by -6 the y variable becomes -y * -6 = 6y Would adding the two equations together eliminate the y variable when -6y + 6y = 0 ?

  4. Solmyr
    • 3 years ago
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    yes

  5. kropot72
    • 3 years ago
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    You have your answer then.

  6. Solmyr
    • 3 years ago
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    so a?

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