document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=811225>Question 811225</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this equation using the elimination method   <BR>\n" );
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document.write( "a+6b=7<BR>\n" );
document.write( "a+2b=-1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #488649 by </B><A HREF=/tutors/aboutme.mpl?userid=erica65404><B>erica65404(394)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=erica65404><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=erica65404><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=488649\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The elimination method is when you add the equations together.  you want to change the equations so a or b cancels out.  To do this make them complete opposites.\r<BR>\n" );
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document.write( "a+6b=7<BR>\n" );
document.write( "a+2b=-1\r<BR>\n" );
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document.write( "we want the a to cancels out.  multiply the top equation by -1\r<BR>\n" );
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document.write( "-a-6b=-7\r<BR>\n" );
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document.write( "now add this to a+2b=-1\r<BR>\n" );
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document.write( "-a-6b=-7<BR>\n" );
document.write( "a+2b=-1\r<BR>\n" );
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document.write( "now add\r<BR>\n" );
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document.write( "0a-4b=-8<BR>\n" );
document.write( "-4b=-8<BR>\n" );
document.write( "b=2\r<BR>\n" );
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document.write( "plug b into the first equation\r<BR>\n" );
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document.write( "a+6(2)=7<BR>\n" );
document.write( "a+12=7<BR>\n" );
document.write( "a=-5\r<BR>\n" );
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document.write( "a=-5 and b=2 is your answer. </SPAN>\n" );
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