document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=25539>Question 25539</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help solving this system of equations by the substitution method:\r<BR>\n" );
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document.write( "y=2x-5\r<BR>\n" );
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document.write( "4x-y=7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #13702 by </B><A HREF=/tutors/aboutme.mpl?userid=askmemath><B>askmemath(368)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=askmemath><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=13702\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y=2x-5  (1)<BR>\n" );
document.write( "4x-y=7  (2)\r<BR>\n" );
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document.write( "From (1) we know that y = 2x-5<BR>\n" );
document.write( "Put this back in (2)<BR>\n" );
document.write( "4x-(2x-5) = 7\r<BR>\n" );
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document.write( "4x-2x+5 = 7<BR>\n" );
document.write( "2x+5 = 7<BR>\n" );
document.write( "Subtracting 5 on both sides<BR>\n" );
document.write( "2x = 2<BR>\n" );
document.write( "Dividing by 2 throughout<BR>\n" );
document.write( "X = 1<BR>\n" );
document.write( "which means y = 2(1)-5 = -3 </SPAN>\n" );
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