document.write( "Question 242368: Solve by the substitution method
\n" ); document.write( "2x+5y=4\r
\n" ); document.write( "\n" ); document.write( "x=11-7y
\n" ); document.write( "

Algebra.Com's Answer #177445 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"+2x%2B5y=4\"
\n" ); document.write( "\"+x=11-7y\"
\n" ); document.write( "Substitute for x in the first equation and solve for y.
\n" ); document.write( "\"+2%2811-7y%29%2B5y=4\"
\n" ); document.write( "\"+22-14y%2B5y=4\"
\n" ); document.write( "\"+-9y=-18\"
\n" ); document.write( "\"+y=2\"
\n" ); document.write( "Then from eq. 1,
\n" ); document.write( "\"+2x%2B5y=4\"
\n" ); document.write( "\"+2x%2B10=4\"
\n" ); document.write( "\"+2x=-6\"
\n" ); document.write( "\"+x=-3+\"\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );