document.write( "Question 999518: solve each system of equations by the substitution method
\n" ); document.write( "2x-y=-7
\n" ); document.write( "4x-3y=-11 \n" ); document.write( "
Algebra.Com's Answer #617134 by mananth(16946)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "2 x + -1 y = -7 .............1
\n" ); document.write( "-1 y = -7 + -2 x
\n" ); document.write( "/ -1 =
\n" ); document.write( " y = 7 + 2 x
\n" ); document.write( "4 x + -3 y = 7 .....................2
\n" ); document.write( "Substitute y in (2)
\n" ); document.write( "4 x + -3 ( 7 + 2 x ) = 7
\n" ); document.write( "4 x + -21 + -6 x = 7
\n" ); document.write( "4 x -6 x = 28
\n" ); document.write( "-2 x = 28
\n" ); document.write( "/ -2
\n" ); document.write( "x= -14
\n" ); document.write( "Plug the value of x in (1)
\n" ); document.write( "2 x + -1 y = -7
\n" ); document.write( "2 * -14 + -1 y = -7
\n" ); document.write( "-28 + -1 y = -7
\n" ); document.write( "-1 y = 21
\n" ); document.write( "/ -1
\n" ); document.write( "y= -21
\n" ); document.write( "m.ananth@hotmail.ca
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