document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=682842>Question 682842</A>: <I><SPAN STYLE=\"word-break: break-all;\"> can you help me solve this problem:<BR>\n" );
document.write( "y=2x+7<BR>\n" );
document.write( "2x-y=-15<BR>\n" );
document.write( "i know u have to do the substitution method but i tried so many times. thanks 4 ur help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #423353 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=423353\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y = 2x+7\r<BR>\n" );
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document.write( "so y and 2x+7 are the same thing\r<BR>\n" );
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document.write( "this means you can replace all/any y values in the second equation with 2x+7\r<BR>\n" );
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document.write( "to go from \r<BR>\n" );
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document.write( "2x-y=-15\r<BR>\n" );
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document.write( "to \r<BR>\n" );
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document.write( "2x-(2x+7)=-15\r<BR>\n" );
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document.write( "Then distribute to get\r<BR>\n" );
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document.write( "2x - 2x - 7 = -15\r<BR>\n" );
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document.write( "and combine like terms to get\r<BR>\n" );
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document.write( "0x - 7 = -15\r<BR>\n" );
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document.write( "Then simplify to get\r<BR>\n" );
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document.write( "-7 = -15\r<BR>\n" );
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document.write( "This is NEVER true regardless of what the value of x or y is. \r<BR>\n" );
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document.write( "So there are NO solutions to this system because the system is <u>inconsistent</u> </SPAN>\n" );
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