document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=98855>Question 98855</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have a dusey for you.  My teacher cant explaine it so i can understand it. i need to solve this system of equations with elimination:<BR>\n" );
document.write( "A: x-2y+3z=4<BR>\n" );
document.write( "B: 2x+y-4z=3<BR>\n" );
document.write( "C: -3x+4y-z=-2\r<BR>\n" );
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document.write( "Much appriecated!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #71930 by </B><A HREF=/tutors/aboutme.mpl?userid=malakumar_kos@yahoo.com><B>malakumar_kos@yahoo.com(315)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=malakumar_kos@yahoo.com><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=71930\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "   solve this system of equations with elimination:<BR>\n" );
document.write( "A: x-2y+3z=4<BR>\n" );
document.write( "B: 2x+y-4z=3<BR>\n" );
document.write( "C: -3x+4y-z=-2 \r<BR>\n" );
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document.write( "   To solve the given eq'ns by elimination we have to first solve A and B  then solve Band C  and then solve the resulting eq'ns\r<BR>\n" );
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document.write( "     A: x-2y+3z = 4<BR>\n" );
document.write( "     B: 2x+y-4z = 3  multiply B by 2  B: 4x+2y-8z = 6<BR>\n" );
document.write( "                                      A:  x-2y+3z = 4<BR>\n" );
document.write( "                                        ---------------<BR>\n" );
document.write( "                                         5x   -5z = 10<BR>\n" );
document.write( "                                        --------------<BR>\n" );
document.write( "          5x-5z = 10   or 5(x-z) = 10   or x-z = 10/5 = 2........(D)\r<BR>\n" );
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document.write( "     B:2x+y-4z = 3<BR>\n" );
document.write( "     C:-3x+4y-z = -2   multiply B  by 4  B:8x+4y-16z = 12<BR>\n" );
document.write( "                                        C: -3x+4y-z  = -2\r<BR>\n" );
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document.write( "                     subtracting          -11x-15z = 14......(E)\r<BR>\n" );
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document.write( "          from D substitute for x in (E)  we get -11(2+z)-15z = 14<BR>\n" );
document.write( "                                                -22-11z-15z = 14<BR>\n" );
document.write( "                                                -26z = 14+22 =36<BR>\n" );
document.write( "                                                   z = -36/26<BR>\n" );
document.write( "                              from (D)  x-z = 2<BR>\n" );
document.write( "                                        x = 2+z = 2-36/26<BR>\n" );
document.write( "                                                = 52-36/26 = 16/26<BR>\n" );
document.write( "                                             x = 16/26\r<BR>\n" );
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document.write( "         substituting for x and z in B  we get 2(16/26)+y-4(-36/26)= 3<BR>\n" );
document.write( "                                              32/26 +y +144/26 = 3<BR>\n" );
document.write( "                                                    y + 176/26 = 3<BR>\n" );
document.write( "                                                       y = 3-176/26<BR>\n" );
document.write( "                                                         = 78-176/26<BR>\n" );
document.write( "                                                         = -98/26\r<BR>\n" );
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document.write( "     the values of x,y and z is x = 8/13, y = -49/13 and z = -18/13\r<BR>\n" );
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document.write( "    </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );