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abbie1

  • 2 years ago

Please help!! If you were to use the substitution method to solve the following system, choose the new system of equations that would result if x was isolated in the third equation. 2x - 3y + z = -4 2x - 2y + z = -1 x - 2y + 3z = -6

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  1. satellite73
    • 2 years ago
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    replace \(x\) everwhere you see it in the top two equations by \(2y-3z-6\)

  2. abbie1
    • 2 years ago
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    ok for the first i got y-5z=8

  3. satellite73
    • 2 years ago
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    first one would simplify to \(2y-5z=8\)

  4. satellite73
    • 2 years ago
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    yeah ok you got the idea

  5. abbie1
    • 2 years ago
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    then once get all those what do i do??

  6. abbie1
    • 2 years ago
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    or is those the final answers?? do you have to combine??

  7. satellite73
    • 2 years ago
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    do it for the next equation just like you did for the first one you get \(2y-5z=11\)

  8. abbie1
    • 2 years ago
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    ok 2nd is 2y-11z-12 and 3rd is -6=-6

  9. satellite73
    • 2 years ago
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    that will give you the new system \[2y-5z=8\] \[2y-5z=11\]

  10. satellite73
    • 2 years ago
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    btw this system has no solution

  11. abbie1
    • 2 years ago
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    THANK YOU! :)

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