document.write( "Question 511321: Solve the system by using substitution. 2x+2y= -6, 3x-2y= -14 \n" ); document.write( "

Algebra.Com's Answer #342191 by mananth(16946) $\"\"$ $\"About$

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2 x + 2 y = -6 .............1
\n" ); document.write( "-2 y = -14 -3 x ---------2
\n" ); document.write( "/ -2 =
\n" ); document.write( " y = 7 + 1.5 x
\n" ); document.write( "Substitute y in (1)
\n" ); document.write( "2 x + 2 ( 7 + 1.5 x ) = -6
\n" ); document.write( "2 x + 14 + 3 x = -6
\n" ); document.write( "2 x + 3 x = -6 -14
\n" ); document.write( "5 x = -20
\n" ); document.write( "/ 5
\n" ); document.write( "x= -4
\n" ); document.write( "Plug the value of x in (1)
\n" ); document.write( "2 x + 2 y = -6
\n" ); document.write( "2 * -4 + 2 y = -6
\n" ); document.write( "-8 + 2 y = -6
\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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