document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=80645>Question 80645</A>: <I><SPAN STYLE=\"word-break: break-all;\"> x+y=5<BR>\n" );
document.write( "3x-y=7\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 #57817 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=57817\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> QUESTION:\r<BR>\n" );
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document.write( "x+y=5<BR>\n" );
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document.write( "ANSWER:\r<BR>\n" );
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document.write( "x+y=5 --------------------(1)\r<BR>\n" );
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document.write( "3x-y=7 --------------------(2)\r<BR>\n" );
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document.write( "Add Equation (1) and (2)\r<BR>\n" );
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document.write( "==> x + y + 3x - y = 5 + 7\r<BR>\n" );
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document.write( "==> x + 3x + y - y = 12\r<BR>\n" );
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document.write( "==> 4x + 0 = 12\r<BR>\n" );
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document.write( "==> 4x = 12\r<BR>\n" );
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document.write( "Divide both sides of the equation by 4, then we have,\r<BR>\n" );
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document.write( "4x/4 = 12/4\r<BR>\n" );
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document.write( "==> x = 3\r<BR>\n" );
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document.write( "Now substitute the value of x in any of the given equation.\r<BR>\n" );
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document.write( "lets take equation (1)\r<BR>\n" );
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document.write( "(1)==> 3 + y = 5\r<BR>\n" );
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document.write( "Subtract 3 from both sides of the equation,\r<BR>\n" );
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document.write( "==> 3 + y - 3 = 5 - 3 \r<BR>\n" );
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document.write( "==>  y = 2\r<BR>\n" );
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document.write( "So the solution is x = 3 and  y = 2\r<BR>\n" );
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document.write( "To check the solution, substitute these values in the given equations, it will satisfy the equation.\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( "Praseena.\r<BR>\n" );
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