document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=94559>Question 94559</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help.\r<BR>\n" );
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document.write( "Solve by addition.<BR>\n" );
document.write( "2x-9y=-4<BR>\n" );
document.write( "x-4y=-1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #68884 by </B><A HREF=/tutors/aboutme.mpl?userid=chitra><B>chitra(359)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=chitra><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=68884\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The given equations are:  \r<BR>\n" );
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document.write( "2x - 9y = -4   --------------------(1)\r<BR>\n" );
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document.write( "x - 4y = -1    --------------------(2)\r<BR>\n" );
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document.write( "Given that the solving should be done by addtion. \r<BR>\n" );
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document.write( "So lets multiply eqn(2) by (-2) and then add it with eqn (1) \r<BR>\n" );
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document.write( "2x - 9y  = -4\r<BR>\n" );
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document.write( "-2x + 8y = 2 <BR>\n" );
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document.write( "  0x - 1y = - 2\r<BR>\n" );
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document.write( "==> y = 2 \r<BR>\n" );
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document.write( "And by back substitution, we get: \r<BR>\n" );
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document.write( "x - 4(2) = - 1 \r<BR>\n" );
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document.write( "x = -1 + 8 \r<BR>\n" );
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document.write( "x = 7 \r<BR>\n" );
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document.write( "Hence, the solution.\r<BR>\n" );
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document.write( "Regards<BR>\n" );
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document.write( " </SPAN>\n" );
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