document.write( "Question 486194: find the solution to each system by the substitution method
\n" );
document.write( "2x-5y=-1
\n" );
document.write( "x-3y=-3\r
\n" );
document.write( "\n" );
document.write( "next problem
\n" );
document.write( "10x+3y=8
\n" );
document.write( "2x+y=2\r
\n" );
document.write( "\n" );
document.write( "email to send the answers cgividen0817@yahoo.com Thank you \n" );
document.write( "
Algebra.Com's Answer #332402 by mananth(16946)![]() ![]() You can put this solution on YOUR website! 2 x -5 y = -1 .............1 \n" ); document.write( "-3 y = -3 -1 x ---------2 \n" ); document.write( "/ -3 = \n" ); document.write( " y = 1 + 0.33 x \n" ); document.write( "Substitute y in (1) \n" ); document.write( "2 x -5 ( 1 + 0.33 x ) = -1 \n" ); document.write( "2 x -5 + -1.67 x = -1 \n" ); document.write( "2 x -1.67 x = -1 5 \n" ); document.write( "0.33 x = 4 \n" ); document.write( "/ 0.33 \n" ); document.write( "x= 12 \n" ); document.write( "Plug the value of x in (1) \n" ); document.write( "2 x -5 y = -1 \n" ); document.write( "2 * 12 -5 y = -1 \n" ); document.write( "24 -5 y = -1 \n" ); document.write( "-5 y = -25 \n" ); document.write( "/ -5 \n" ); document.write( "y= 5 \r \n" ); document.write( "\n" ); document.write( "----------------- \r \n" ); document.write( "\n" ); document.write( "10 x + 3 y = 8 .............1 \n" ); document.write( "1 y = 2 -2 x ---------2 \n" ); document.write( "/ 1 = \n" ); document.write( " y = 2 -2 x \n" ); document.write( "Substitute y in (1) \n" ); document.write( "10 x + 3 ( 2 -2 x ) = 8 \n" ); document.write( "10 x + 6 + -6 x = 8 \n" ); document.write( "10 x -6 x = 8 -6 \n" ); document.write( "4 x = 2 \n" ); document.write( "/ 4 \n" ); document.write( "x= 0.5 \n" ); document.write( "Plug the value of x in (1) \n" ); document.write( "10 x + 3 y = 8 \n" ); document.write( "10 * 0.5 + 3 y = 8 \n" ); document.write( "5 + 3 y = 8 \n" ); document.write( "3 y = 3 \n" ); document.write( "/ 3 \n" ); document.write( "y= 1 \n" ); document.write( "m.ananth@hotmail.ca \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |