document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=271088>Question 271088</A>: <I><SPAN STYLE=\"word-break: break-all;\"> OK, so I know the following is incorrect, so could you help me to figure out what I am doing wrong. I am trying to solve the linear equations by using linear combinations.\r<BR>\n" );
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document.write( "9X-3Z=20<BR>\n" );
document.write( "3X+6Z=2\r<BR>\n" );
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document.write( "My answers were X=2 and Z= -.66 or -2/3\r<BR>\n" );
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document.write( "I would appreciate your help!\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 #198491 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=198491\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "Here we go. <BR>\n" );
document.write( "9X-3Z=20<BR>\n" );
document.write( "3X+6Z=2 <BR>\n" );
document.write( "Multiply the first equation by 2 to get:<BR>\n" );
document.write( "18X-6Z=40 Now, add this to the second:<BR>\n" );
document.write( "3X+6Z=2 <BR>\n" );
document.write( "And we get:<BR>\n" );
document.write( "21X=42 Divide each side by 21 to get:<BR>\n" );
document.write( "X=2 Plug 2 into the first equation to get:<BR>\n" );
document.write( "18-3Z=20 Subtract 18 from both sides and divide by -3 to get:<BR>\n" );
document.write( "Z=-2/3<BR>\n" );
document.write( "You'll see that plugging these answers into the equations works out right. <BR>\n" );
document.write( "So don't be so hard on yourself. You are RIGHT!<BR>\n" );
document.write( "RJ<BR>\n" );
document.write( "Check out a book I wrote at:<BR>\n" );
document.write( "www.math-unlock.com </SPAN>\n" );
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