document.write( "Question 730132: use the method of substitution to solve the system of linear equation
\n" ); document.write( "a. 2x-y=2
\n" ); document.write( "b. 7x-3y=10 \n" ); document.write( "

Algebra.Com's Answer #446493 by mananth(16946) $\"\"$ $\"About$

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2 x + - y = 2 .............1
\n" ); document.write( "- y = 2 + -2 x
\n" ); document.write( "/ -1 =
\n" ); document.write( " y = -2 + 2 x
\n" ); document.write( "7 x + -3 y = 10 .....................2
\n" ); document.write( "Substitute y in (2)
\n" ); document.write( "7 x -3 ( -2 + 2 x ) = 10
\n" ); document.write( "7 x + 6 + -6 x = 10
\n" ); document.write( "7 x -6 x = 4
\n" ); document.write( "1 x = 4
\n" ); document.write( "/ 1
\n" ); document.write( "x= 4
\n" ); document.write( "Plug the value of x in (1)
\n" ); document.write( "2 x - y = 2
\n" ); document.write( "2 * 4 - y = 2
\n" ); document.write( "8 + - y = 2
\n" ); document.write( "-1 y = -6
\n" ); document.write( "/ -1
\n" ); document.write( "y= 6
\n" ); document.write( "m.ananth@hotmail.ca
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