document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=55801>Question 55801</A>: <I><SPAN STYLE=\"word-break: break-all;\"> QUESTION: SOLVE EACH OF THE FOLLOWING SYSTEMS BY SUBSTITUION\r<BR>\n" );
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document.write( "20. 8X-4Y=16     I BELIVE YOUR SUBSTITUING FOR Y<BR>\n" );
document.write( "        Y=2X-4\r<BR>\n" );
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document.write( "28. 4X-12Y=5<BR>\n" );
document.write( "     -X+ 3Y=-1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #37856 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=37856\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 20. 8X-4Y=16 <BR>\n" );
document.write( "Y=2X-4<BR>\n" );
document.write( "8x-4(2x-4)=16<BR>\n" );
document.write( "8x-8x+16=16<BR>\n" );
document.write( "0=0<BR>\n" );
document.write( "This means the original problem has an infinite number<BR>\n" );
document.write( "of solutions ; The system of equations is true for all <BR>\n" );
document.write( "points on the line y=2x-4; it also means you don't have two equations,<BR>\n" );
document.write( "you have one.<BR>\n" );
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document.write( "28. 4X-12Y=5<BR>\n" );
document.write( "-X+ 3Y=-1<BR>\n" );
document.write( "x=3Y+1<BR>\n" );
document.write( "4(3y+1)-12y=5<BR>\n" );
document.write( "12y+4-12y =5<BR>\n" );
document.write( "4=5<BR>\n" );
document.write( "This is false, of couse.  It means there is <BR>\n" );
document.write( "no solution to the system of equations.  The<BR>\n" );
document.write( "two lines are parallel; they never meet in a point.<BR>\n" );
document.write( "cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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