document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=675304>Question 675304</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve using the substitution method.\r<BR>\n" );
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document.write( "2x-2y=7<BR>\n" );
document.write( "x=y+5\r<BR>\n" );
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document.write( "2(y+5)-2y=7         <BR>\n" );
document.write( "2y+10-2y=7         <BR>\n" );
document.write( "  -10    -10   <BR>\n" );
document.write( "2y-2y=-3<BR>\n" );
document.write( "0=-3<BR>\n" );
document.write( "OR if I cancel out the variables first I get 10=7\r<BR>\n" );
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document.write( "Obviously, neither of these is right, so what am I doing wrong?<BR>\n" );
document.write( "Thanks,<BR>\n" );
document.write( "Mandie\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #419701 by </B><A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><B>ReadingBoosters(3246)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ReadingBoosters><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=419701\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x - 2y = 7<BR>\n" );
document.write( "x = y+5<BR>\n" );
document.write( "2(y+5) - 2y = 7<BR>\n" );
document.write( "2y + 10 - 2y = 7<BR>\n" );
document.write( "10 = 7<BR>\n" );
document.write( "There is no solution.<BR>\n" );
document.write( "...<BR>\n" );
document.write( "You haven't done anything wrong, the lines don't intersect anywhere, they are parallel with the same slope of 1.<BR>\n" );
document.write( "2x-2y = 7 |  2x-7=2y  | <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28y+=+x-%287%2F2%29%29 ALIGN=MIDDLE  ALT=\"highlight_green%28y+=+x-%287%2F2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = y + 5 | <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y+=+x-5%29 ALIGN=MIDDLE  ALT=\"highlight%28y+=+x-5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C200%2C-10%2C10%2C-10%2C10%2Cx-5%2C+x-%287%2F2%29%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C200%2C-10%2C10%2C-10%2C10%2Cx-5%2C+x-%287%2F2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "-Reading Boosters<BR>\n" );
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