document.write( "Question 825076: Solve using Matrices-----
\n" ); document.write( "4x-y=5
\n" ); document.write( "3x-3y=0 \n" ); document.write( "

Algebra.Com's Answer #496999 by Alan3354(69443) $\"\"$ $\"About$

You can put this solution on YOUR website!
Solve using Matrices-----
\n" ); document.write( "4x-y=5
\n" ); document.write( "3x-3y=0
\n" ); document.write( "------------
\n" ); document.write( "|4 -1|
\n" ); document.write( "|3 -3|
\n" ); document.write( "Det = 4*-3 - 3*-1 = -12 + 3 = -9
\n" ); document.write( "---
\n" ); document.write( "For x:
\n" ); document.write( "|-1 -5|
\n" ); document.write( "|-3 0|
\n" ); document.write( "x*Det = -1*0 - (-3*-5) = -15
\n" ); document.write( "x = -15/-9 = 5/3
\n" ); document.write( "------
\n" ); document.write( "For -y*Det:
\n" ); document.write( "|4 -5|
\n" ); document.write( "|3 0|
\n" ); document.write( "-y*Det = 4*0 - 3*-5 = 15
\n" ); document.write( "-y = 15/-9
\n" ); document.write( "y = 5/3
\n" ); document.write( " \n" ); document.write( "

\n" );