document.write( "Question 437118: 3y - x = 4
\n" ); document.write( "2x + 2y = 24
\n" ); document.write( "how do i solve this with substitution? \n" ); document.write( "
Algebra.Com's Answer #302331 by mananth(16946)\"\" \"About 
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\n" ); document.write( "Rewrite the equations\r
\n" ); document.write( "\n" ); document.write( "-1x+3y= 4 .............1
\n" ); document.write( "
\n" ); document.write( "2y=24-2x---------2
\n" ); document.write( "/2
\n" ); document.write( "y=12-x
\n" ); document.write( "Plug the value of y in (1)
\n" ); document.write( "-x+3(12-x)=4
\n" ); document.write( "-x+36-3x=4
\n" ); document.write( "-x-3x=4-36
\n" ); document.write( "-4x=-32
\n" ); document.write( "/-4
\n" ); document.write( "x=8
\n" ); document.write( "Plug the value of x in (1)
\n" ); document.write( "-x+3y=4
\n" ); document.write( "-1*8+3y=4
\n" ); document.write( "-8+3y=4
\n" ); document.write( "3y=12
\n" ); document.write( "/3
\n" ); document.write( "y=4
\n" ); document.write( " \n" ); document.write( "
\n" );