document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=132883>Question 132883</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need a little help solving this equation and finding the solution to the system. Could someone please help me?\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B7y=7 ALIGN=MIDDLE  ALT=\"x%2B7y=7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=4-7y ALIGN=MIDDLE  ALT=\"x=4-7y\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #97096 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=97096\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+7y=7}}}<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B7y=7%7D%7D%7D%0D%0A ALIGN=MIDDLE  ALT=\"x%2B7y=7%7D%7D%7D%0D%0A\"   DISABLED_style= \"max-width:90%; height:auto;\" >x=4-7y<BR>\n" );
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document.write( "substitute the value of \"x\" in the 2nd equation into the 1st to get:<BR>\n" );
document.write( "4-7y+7y=7<BR>\n" );
document.write( "4 = 7<BR>\n" );
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document.write( "This happened because I assumed the x and y in the one equation <BR>\n" );
document.write( "were the same as the x and y in the other.<BR>\n" );
document.write( "That assumption lead to the contradiction.<BR>\n" );
document.write( "The system of equation is said to be inconsistent.<BR>\n" );
document.write( "There is no solution.<BR>\n" );
document.write( "If you graph the two equation you will get two parallel lines.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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