document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=63610>Question 63610</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you please help me solve this system of equation using the substitution and elimination methods.\r<BR>\n" );
document.write( "\n" );
document.write( "8x + 9 = -5y<BR>\n" );
document.write( "-3x + 3y = -21 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #44347 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=44347\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1st: 8x + 9 = -5y<BR>\n" );
document.write( "2nd: -3x + 3y = -21<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Divide thru 2nd by 3 to get:<BR>\n" );
document.write( "-x+y=-7<BR>\n" );
document.write( "Solve for y to get:<BR>\n" );
document.write( "y=x-7<BR>\n" );
document.write( "Substitute in 1st to get:<BR>\n" );
document.write( "8x+9=-5(x-7)<BR>\n" );
document.write( "8x+9=-5x+35<BR>\n" );
document.write( "13x=26<BR>\n" );
document.write( "x=2<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Substitute into y=x-7 to solve for y, as follows:<BR>\n" );
document.write( "y=2-7=-5<BR>\n" );
document.write( "Solution: (2,-5)<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );