document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=34092>Question 34092</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please explain in detail, how to solve this please?\r<BR>\n" );
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document.write( "Solve the system of equations by substitution: <BR>\n" );
document.write( "x + 2y = 9<BR>\n" );
document.write( "3x - y = 13\r<BR>\n" );
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document.write( "Thank you for your assistance. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #20432 by </B><A HREF=/tutors/aboutme.mpl?userid=sarah_adam><B>sarah_adam(201)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sarah_adam><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=20432\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x + 2y = 9   --- eq 1<BR>\n" );
document.write( "3x - y = 13  --- eq 2\r<BR>\n" );
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document.write( "3x+6y  = 27   --- eq 1 * 3 ( multiply the entire equation with 3)<BR>\n" );
document.write( "3x - y = 13   --- eq 2<BR>\n" );
document.write( "(-) (+) (-)<BR>\n" );
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document.write( "7y = 14  --- (eq 1 - eq 2)<BR>\n" );
document.write( "y = 14/7 = 2\r<BR>\n" );
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document.write( "substitute value of y in eq 1<BR>\n" );
document.write( "x+2(2) = 9<BR>\n" );
document.write( "x + 4 = 9<BR>\n" );
document.write( "x = 9 - 4 = 5\r<BR>\n" );
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document.write( " by substitution method<BR>\n" );
document.write( "x = 9 - 2y<BR>\n" );
document.write( "substitute value of x in eq 2<BR>\n" );
document.write( "3(9 - 2y) - y = 13<BR>\n" );
document.write( "27 - 6y - y = 13<BR>\n" );
document.write( "27 - 13 = 7y<BR>\n" );
document.write( "14 = 7y<BR>\n" );
document.write( "y = 14/7 =2\r<BR>\n" );
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document.write( "x = 9 - 2y<BR>\n" );
document.write( "x = 9 - 2(2) = 9 - 4 = 5\r<BR>\n" );
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document.write( "x = 5 ; y = 2\r<BR>\n" );
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document.write( " </SPAN>\n" );
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