document.write( "Question 580613: Solve the following simultaneous equations by using Cramer’s rule\r
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\n" ); document.write( "\n" ); document.write( "3x+2y=13\r
\n" ); document.write( "\n" ); document.write( "2x-y=4 \n" ); document.write( "

Algebra.Com's Answer #371307 by mananth(16946) $\"\"$ $\"About$

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3x+2y=13\r
\n" ); document.write( "\n" ); document.write( "2x-y=4\r
\n" ); document.write( "\n" ); document.write( "d=| 3 2 |
\n" ); document.write( "...| 2 -1| \r
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\n" ); document.write( "\n" ); document.write( "= 3*-1 -2*2
\n" ); document.write( "=-7\r
\n" ); document.write( "\n" ); document.write( "Dx= | 13 2|
\n" ); document.write( "... | 4 -1|\r
\n" ); document.write( "\n" ); document.write( "=-13-8
\n" ); document.write( "=-21\r
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\n" ); document.write( "\n" ); document.write( "Dy= | 3 13|
\n" ); document.write( "... | 2 4|\r
\n" ); document.write( "\n" ); document.write( "= 12-26\r
\n" ); document.write( "\n" ); document.write( "=-14\r
\n" ); document.write( "\n" ); document.write( "x=Dx/D = -21/-7
\n" ); document.write( "x=3\r
\n" ); document.write( "\n" ); document.write( "y=Dy/D = -14/-7=2\r
\n" ); document.write( "\n" ); document.write( "x=3, y=2\r
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