document.write( "Question 546400: solve the system of equations by using the substitution method\r
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document.write( "3x-4y=29
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document.write( "y=x-8 \n" );
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Algebra.Com's Answer #355956 by mananth(16946)![]() ![]() You can put this solution on YOUR website! 3 x -5 y = 29 .............1 \n" ); document.write( "1 y = -8 + 1 x ---------2 \n" ); document.write( "/ 1 = \n" ); document.write( " y = -8 + 1 x \n" ); document.write( "Substitute y in (1) \n" ); document.write( "3 x -5 ( -8 + 1 x ) = 29 \n" ); document.write( "3 x + 40 + -5 x = 29 \n" ); document.write( "3 x -5 x = 29 -40 \n" ); document.write( "-2 x = -11 \n" ); document.write( "/ -2 \n" ); document.write( "x= 5.5 \n" ); document.write( "Plug the value of x in (1) \n" ); document.write( "3 x -5 y = 29 \n" ); document.write( "3 * 5.5 -5 y = 29 \n" ); document.write( "16.5 -5 y = 29 \n" ); document.write( "-5 y = 12.5 \n" ); document.write( "/ -5 \n" ); document.write( "y= -2.5 \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " \n" ); document.write( " |