document.write( "Question 99269: solve \"4x-y%2B3z=25\" using Matrices \n" ); document.write( "
Algebra.Com's Answer #72215 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
You cannot solve a single equation with three variables with matrices.
\n" ); document.write( "You need a total of three equations with the same three variables.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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