document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=159222>Question 159222</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi,<BR>\n" );
document.write( "I have tried and tried to answer the following problem - it involves three variables and using substitution:\r<BR>\n" );
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document.write( "5x -y = 7<BR>\n" );
document.write( "y = 5x + 6\r<BR>\n" );
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document.write( "If I plug in (5x + 6) as y into the first equation, the x's cancel each other out, leaving me with 0 instead of a variable (I have tried a bunch of different ways, and all cancel out the variable - my mom has tried as well).  Is the solution \"no solution?\"\r<BR>\n" );
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document.write( "I have a test on substitution tomorrow, so any help would be greatly appreciated.\r<BR>\n" );
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document.write( "Thank you! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #117369 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=117369\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I have tried and tried to answer the following problem - it involves three variables and using substitution: <BR>\n" );
document.write( "5x -y = 7<BR>\n" );
document.write( "y = 5x + 6 <BR>\n" );
document.write( "If I plug in (5x + 6) as y into the first equation, the x's cancel each other out, leaving me with 0 instead of a variable (I have tried a bunch of different ways, and all cancel out the variable - my mom has tried as well). Is the solution \"no solution?\" <BR>\n" );
document.write( "I have a test on substitution tomorrow, so any help would be greatly appreciated. <BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "Rearrange the 2nd eqn:<BR>\n" );
document.write( "5x -y = 7<BR>\n" );
document.write( "5x -y = -6<BR>\n" );
document.write( "These can't both be true, 7 <> -6, so: NO Solution.  <BR>\n" );
document.write( "If you graph the 2 eqns, you'll see they're 2 parallel lines. </SPAN>\n" );
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