document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=809878>Question 809878</A>: <I><SPAN STYLE=\"word-break: break-all;\"> We are given the three sides of a regular polygon as listed below, the top side is 2x-4, the right side is 4y-x and the bottom side is x+y.     \r<BR>\n" );
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document.write( "2x-4<BR>\n" );
document.write( "4y-x<BR>\n" );
document.write( "x+y\r<BR>\n" );
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document.write( "Solve for x and y.  \r<BR>\n" );
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document.write( "I keep getting different answers for x and y when using the substitution method.  Thank you for your time and assistance.   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #487906 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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/cgi-bin/show-face.mpl?user=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=487906\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We are given the three sides of a regular polygon as listed below, the top side is 2x-4, the right side is 4y-x and the bottom side is x+y. <BR>\n" );
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document.write( "A regular polygon has all sides and angles equal, therefore<BR>\n" );
document.write( "2x - 4 = x + y<BR>\n" );
document.write( "2x - x = y + 4<BR>\n" );
document.write( "x = y + 4<BR>\n" );
document.write( "also<BR>\n" );
document.write( "2x - 4 = 4y - x<BR>\n" );
document.write( "2x + x - 4y = 4<BR>\n" );
document.write( "3x - 4y = 4<BR>\n" );
document.write( "replace x with (y+4)<BR>\n" );
document.write( "3(y+4) - 4y = 4<BR>\n" );
document.write( "3y + 12 - 4y = 4<BR>\n" );
document.write( "3y - 4y = 4 - 12<BR>\n" );
document.write( "-y = -8<BR>\n" );
document.write( "y = 8<BR>\n" );
document.write( "then<BR>\n" );
document.write( "x = 8 + 4 <BR>\n" );
document.write( "x = 12<BR>\n" );
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document.write( "Confirm this by seeing if all the sides are equal with these value<BR>\n" );
document.write( "2x - 4<BR>\n" );
document.write( "24 - 4 = 20<BR>\n" );
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document.write( "x + y<BR>\n" );
document.write( "12 + 8 = 20<BR>\n" );
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document.write( "4y - x<BR>\n" );
document.write( "32 = 12 = 20 </SPAN>\n" );
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