document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=65601>Question 65601</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/093979862x/algebrahomeworkh>An Incremental Development</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Solve\r<BR>\n" );
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document.write( "x + y + z = 11<BR>\n" );
document.write( "2x + y - z = 13<BR>\n" );
document.write( "x = 2y </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #46266 by </B><A HREF=/tutors/aboutme.mpl?userid=praseenakos@yahoo.com><B>praseenakos@yahoo.com(507)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=praseenakos@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/cgi-bin/show-face.mpl?user=praseenakos@yahoo.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=46266\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> QUESTION:\r<BR>\n" );
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document.write( "Solve\r<BR>\n" );
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document.write( "x + y + z = 11<BR>\n" );
document.write( "2x + y - z = 13<BR>\n" );
document.write( "x = 2y\r<BR>\n" );
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document.write( "ANSWER:\r<BR>\n" );
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document.write( "x + y + z = 11   -----------------------(1)\r<BR>\n" );
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document.write( "2x + y - z = 13  -----------------------(2)\r<BR>\n" );
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document.write( "x = 2y   -------------------------------(3)\r<BR>\n" );
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document.write( "Fron (2) we have, x = 2y. \r<BR>\n" );
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document.write( "Substitute this value in (1) and (2)\r<BR>\n" );
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document.write( "==><BR>\n" );
document.write( "2y + y + z = 11  <BR>\n" );
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document.write( "3y + z = 11      ------------------------(4)\r<BR>\n" );
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document.write( "2(2y) + y - z = 13  \r<BR>\n" );
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document.write( "4y + y - z = 13\r<BR>\n" );
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document.write( "==> 5y - Z = 13 -------------------------(5)\r<BR>\n" );
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document.write( "Let's take (4) and (5) together,\r<BR>\n" );
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document.write( "3y + z = 11      ------------------------(4)\r<BR>\n" );
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document.write( "5y - Z = 13      ------------------------(5)\r<BR>\n" );
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document.write( "Add (4) and (5) ====>\r<BR>\n" );
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document.write( "3y + z + 5y - Z = 11  + 13\r<BR>\n" );
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document.write( "==> 8y = 24\r<BR>\n" );
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document.write( "Divide both sides by 8,\r<BR>\n" );
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document.write( "==> 8y/8 = 24/8\r<BR>\n" );
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document.write( "==> y = 3\r<BR>\n" );
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document.write( "Substitute the value of y in equation (3) x = 2y\r<BR>\n" );
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document.write( "==> x = 2* 3\r<BR>\n" );
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document.write( "==> x = 6\r<BR>\n" );
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document.write( "    <BR>\n" );
document.write( "Input the values of x and y in equation (1)\r<BR>\n" );
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document.write( "6 + 3 + z = 11\r<BR>\n" );
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document.write( "   \r<BR>\n" );
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document.write( "==> 9 + z = 11\r<BR>\n" );
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document.write( "Subtract 9 from both sides,\r<BR>\n" );
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document.write( "==> 9 + z - 9 = 11 - 9 \r<BR>\n" );
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document.write( "==> z = 2 \r<BR>\n" );
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document.write( "so the solution is,\r<BR>\n" );
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document.write( "x = 6\r<BR>\n" );
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document.write( "y = 3\r<BR>\n" );
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document.write( "z = 2\r<BR>\n" );
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document.write( "Hope you understood.\r<BR>\n" );
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document.write( "Regards.\r<BR>\n" );
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document.write( "praseenakos@yahoo.co.in\r<BR>\n" );
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document.write( " </SPAN>\n" );
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