document.write( "Question 813449: Use Gauss-Jordan Elimination to solve the following system of equations.\r
\n" ); document.write( "\n" ); document.write( "4x + 8y − 4z = 12
\n" ); document.write( "3x + 6y − 3z = 9
\n" ); document.write( "−x − 2y + z = −3\r
\n" ); document.write( "\n" ); document.write( "(A) no solution (B) x = 3 − 2s y = 3 + t z = t (C) x = 3 + 2s y = 3 − t z = t (D) x = −3 − 2s + t y = s z = t (E) x = 3 + 2s − t y = s z = t (F) x = −3 + 2s y = −3 − t z = t (G) x = 3 − 2s + t y = s z = t (H) x = −3 + 2s − t y = s z = t \n" ); document.write( "

Algebra.Com's Answer #489678 by richwmiller(17219) $\"\"$ $\"About$

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4x+8y-4z = 12,
\n" ); document.write( "divide by 4
\n" ); document.write( "x+2y -1z=3
\n" ); document.write( "divide by 3
\n" ); document.write( "3x+6y-3z = 9,
\n" ); document.write( "x+2y-z=3\r
\n" ); document.write( "\n" ); document.write( "-x-2y+ z =-3
\n" ); document.write( "multiply by -1
\n" ); document.write( "x+2y-3=3\r
\n" ); document.write( "\n" ); document.write( "a) no solution
\n" ); document.write( "z = x+2 y-3,
\n" ); document.write( "z = x+2 y-3,
\n" ); document.write( "z = x+2 y-3}
\n" ); document.write( " \n" ); document.write( "

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