document.write( "Question 718502: solve using the subtuition method 3x-2y=8
\n" ); document.write( " 5x+3y=7 find the value of y \n" ); document.write( "

Algebra.Com's Answer #440939 by mananth(16946) $\"\"$ $\"About$

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3 x + -2 y = 8 .............1
\n" ); document.write( "-2 y = 8 + -3 x
\n" ); document.write( "/ -2 =
\n" ); document.write( " y = -4 + 1.5 x
\n" ); document.write( "5 x + 3 y = 7 .....................2
\n" ); document.write( "Substitute y in (2)
\n" ); document.write( "5 x + 3 ( -4 + 1.5 x ) =
\n" ); document.write( "5 x + -12 + 4.5 x = 7
\n" ); document.write( "5 x 4.5 x = 19
\n" ); document.write( "9.5 x = 19
\n" ); document.write( "/ 9.5
\n" ); document.write( "x= 2
\n" ); document.write( "Plug the value of x in (1)
\n" ); document.write( "3 x + -2 y = 8
\n" ); document.write( "3 * 2 + -2 y = 8
\n" ); document.write( "6 + -2 y = 8
\n" ); document.write( "-2 y = 2
\n" ); document.write( "/ -2
\n" ); document.write( "y= -1
\n" ); document.write( "m.ananth@hotmail.ca
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