document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=301982>Question 301982</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve using the elimination method.<BR>\n" );
document.write( "4a+6b=-1<BR>\n" );
document.write( "a-3b=2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #216549 by </B><A HREF=/tutors/aboutme.mpl?userid=london+maths+tutor><B>london maths tutor(243)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=london+maths+tutor><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=london+maths+tutor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=216549\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 4a+6b=-1 ... equation 1<BR>\n" );
document.write( "a-3b=2 ... equation 2\r<BR>\n" );
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document.write( "equation 2 x 4 : \r<BR>\n" );
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document.write( "a(4) - 3b(4) = 2(4)<BR>\n" );
document.write( "4a -12b = 8\r<BR>\n" );
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document.write( "Equation 1 - Equation 2\r<BR>\n" );
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document.write( "4a + 6b - [4a - 12 b] = -1 - 8<BR>\n" );
document.write( "6b + 12b = -9 <BR>\n" );
document.write( "18b=-9<BR>\n" );
document.write( "b = -9/18 <BR>\n" );
document.write( "b = -1/2\r<BR>\n" );
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document.write( "Put b=-1/2 into a-3b = 2\r<BR>\n" );
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document.write( "a - 3(-1/2) = 2<BR>\n" );
document.write( "a -(-3/2) = 2<BR>\n" );
document.write( "a + 3/2 = 2<BR>\n" );
document.write( "a = 2 - 3/2 <BR>\n" );
document.write( "a = 2 - 1 1/2 <BR>\n" );
document.write( "a = 1/2\r<BR>\n" );
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document.write( "Answer : a = 1/2 and b = -1/2<BR>\n" );
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