document.write( "Question 1122833: Subscript notation is frequently used for working with larger systems of equations. Use a matrix approach to solve the system. Express the solutions as 4-tuples of the form
\n" ); document.write( "(x1, x2, x3, x4).
\n" ); document.write( "x1 − 3x2 − 2x3 + x4 = −4
\n" ); document.write( "−2x1 + 7x2 + x3 − 2x4 = −2
\n" ); document.write( "3x1 − 7x2 − 3x3 + 3x4 = −5
\n" ); document.write( "5x1 + x2 + 4x3 − 2x4 = 20
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Algebra.Com's Answer #739007 by Alan3354(69443) $\"\"$ $\"About$

You can put this solution on YOUR website!
You can do this for the practice and to learn how to do it.
\n" ); document.write( "I don't need the practice.
\n" ); document.write( "Or, you can use an online site to get the answer.
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