document.write( "Question 1203939: x = 5y - 1\r
\n" ); document.write( "\n" ); document.write( "x + 2y = 13 \n" ); document.write( "
Algebra.Com's Answer #839871 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
\"x+=+5y+-+1\".....eq.1
\n" ); document.write( "\"x+%2B+2y+=+13\".....eq.2
\n" ); document.write( "______________________________\r
\n" ); document.write( "\n" ); document.write( "go to\r
\n" ); document.write( "\n" ); document.write( "\"x+%2B+2y+=+13\".....eq.2, substitute \"x\" from eq.1\r
\n" ); document.write( "\n" ); document.write( "\"5y+-+1+%2B+2y+=+13\"\r
\n" ); document.write( "\n" ); document.write( "\"7y+=+13%2B1\"\r
\n" ); document.write( "\n" ); document.write( "\"7y+=+14\"\r
\n" ); document.write( "\n" ); document.write( "\"y+=+14%2F7\"\r
\n" ); document.write( "\n" ); document.write( "\"y+=+2\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "go to\r
\n" ); document.write( "\n" ); document.write( "\"x+=+5y+-+1\".....eq.1, substitute \"y\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+5%2A2+-+1\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+9\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "solution:\r
\n" ); document.write( "\n" ); document.write( "\"x+=+9\"\r
\n" ); document.write( "\n" ); document.write( "\"y+=+2\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );