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<quiz>
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 <question type="category"><category><text>Pre-Calc/Chapter 7:  Systems and Matrices/7.3 Solving Linear Systems with Matrices/Solve Linear System in 3 or 4-Variables</text></category></question>
 
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 <question type="multichoice">
    <name>
      <text>Solve the system of equations.  x +  y +  z -  w =   6 2x -  y + 3z + 4w =  ...</text>
    </name>
    <questiontext format="html">
      <text><![CDATA[<b>Solve the system of equations.<br/><br/></b>  x +  y +  z -  w =   6<br/><sub> 2x -  y + 3z + 4w =  -4<br/></sub> 4x + 2y -  z -  w = -13<br/><sub> -x - 2y + 4z + 3w =  12</sub>]]></text>
    </questiontext>
    <generalfeedback format="html">
      <text></text>
    </generalfeedback>
    <defaultgrade>1.0000000</defaultgrade>
    <penalty>0.3333333</penalty>
    <hidden>0</hidden>
    <single>true</single>
    <shuffleanswers>true</shuffleanswers>
    <answernumbering>abc</answernumbering>
    <correctfeedback format="html">
      <text></text>
    </correctfeedback>
    <partiallycorrectfeedback format="html">
      <text></text>
    </partiallycorrectfeedback>
    <incorrectfeedback format="html">
      <text></text>
    </incorrectfeedback>
    <answer fraction="0" format="html">
      <text>No solution</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text>(4, -3, -5, 2)</text>
      <feedback format="html">
        <text>Incorrect</text>
      </feedback>
    </answer>
    <answer fraction="100" format="html">
      <text>(-4, 3, 5, -2)</text>
      <feedback format="html">
        <text>Correct</text>
      </feedback>
    </answer>
    <answer fraction="0" format="html">
      <text><![CDATA[<img align="bottom" src="@@PLUGINFILE@@/ppg__7.30222131734__f1q4g1.jpg"/>]]></text>
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        <text>Incorrect</text>
      </feedback>
    </answer>
  </question>
 </quiz>
