document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1018939>Question 1018939</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2.   Solve the following systems of equations by elimination. Verify the solutions.\r<BR>\n" );
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document.write( "a.   r + 2s + 1 = 0<BR>\n" );
document.write( "r + 5s + 28 = 0\r<BR>\n" );
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document.write( "b.   4m - 3n = 27<BR>\n" );
document.write( "8m - 6n = 18\r<BR>\n" );
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document.write( "c.   0.6x = 1.2 + 0.3y<BR>\n" );
document.write( "2.2x - 1.8y - 1.6 = 0\r<BR>\n" );
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document.write( "3.   Frank has $8 000 that he plans to split into two investments. He wrote the following two equations to represent the interest he will earn from each of the two investment options.\r<BR>\n" );
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document.write( "			• 2000A + 6000B = 520<BR>\n" );
document.write( "			• 4000A + 4000B = 480\r<BR>\n" );
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document.write( "		Determine the interest rates, A and B, as percentages.\r<BR>\n" );
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document.write( "		 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #634922 by </B><A HREF=/tutors/aboutme.mpl?userid=FrankM><B>FrankM(1040)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=FrankM><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=FrankM><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=634922\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "r + 5s + 28 = 0 <BR>\n" );
document.write( "r + 2s + 1 = 0    subtract from first equation.\r<BR>\n" );
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document.write( "3s+27=0\r<BR>\n" );
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document.write( "s=-9\r<BR>\n" );
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document.write( "r + 2(-9) + 1 = 0\r<BR>\n" );
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document.write( "r -18+1 =0\r<BR>\n" );
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document.write( "r=17 </SPAN>\n" );
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