document.write( "Question 741771: For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation?\r
\n" ); document.write( "\n" ); document.write( "−x + 2y = 9
\n" ); document.write( "4x + 5y = 9
\n" ); document.write( "

Algebra.Com's Answer #452135 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
add x
\n" ); document.write( "subtract 9\r
\n" ); document.write( "\n" ); document.write( "2y-9
\n" ); document.write( "
\n" );