document.write( "Question 168333: use cramers rule to solve the system..\r
\n" );
document.write( "\n" );
document.write( "3x+2y=-2
\n" );
document.write( "5x+4y=8 \n" );
document.write( "
Algebra.Com's Answer #124327 by Juhi(44)![]() ![]() You can put this solution on YOUR website! 3x+2y=-2 - (i) \n" ); document.write( "5x+4y=8 - (ii)\r \n" ); document.write( "\n" ); document.write( "multipying (i) by 2, we get\r \n" ); document.write( "\n" ); document.write( "6x + 4y = -4 - (iii)\r \n" ); document.write( "\n" ); document.write( "subracting (ii) from (iii),\r \n" ); document.write( "\n" ); document.write( "6x + 4y - 5x - 4y = 8 + 2 \n" ); document.write( "x = 10\r \n" ); document.write( "\n" ); document.write( "putting x=10 in (i),\r \n" ); document.write( "\n" ); document.write( "3(10) + 2y = -2 \n" ); document.write( "30 + 2y = -2 \n" ); document.write( "2y = - 2 - 30 \n" ); document.write( "2y = -32 \n" ); document.write( "y = -16\r \n" ); document.write( "\n" ); document.write( "x = 10 \n" ); document.write( "y = -16 \n" ); document.write( " |