document.write( "Question 546400: solve the system of equations by using the substitution method\r
\n" ); document.write( "\n" ); document.write( "3x-4y=29
\n" ); document.write( "y=x-8
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Algebra.Com's Answer #355956 by mananth(16946)\"\" \"About 
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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
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