document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=208143>Question 208143</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve algebraically:\r<BR>\n" );
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document.write( "7x+3y=29<BR>\n" );
document.write( "and<BR>\n" );
document.write( "5x+6y=-10 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #157507 by </B><A HREF=/tutors/aboutme.mpl?userid=HyperBrain><B>HyperBrain(694)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=HyperBrain><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=157507\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We are given two equations:<BR>\n" );
document.write( "(1)7x+3y=29<BR>\n" );
document.write( "(2)5x+6y=-10<BR>\n" );
document.write( "---<BR>\n" );
document.write( "if we multiply (1) by 2,<BR>\n" );
document.write( "14x+6y=58<BR>\n" );
document.write( "then, if we subtract (2) from this,<BR>\n" );
document.write( "9x=68<BR>\n" );
document.write( "x=68/9<BR>\n" );
document.write( "---<BR>\n" );
document.write( "substituting this to (1),<BR>\n" );
document.write( "7(68/5)+3y=29<BR>\n" );
document.write( "476/5+3y=29<BR>\n" );
document.write( "3y=29-476/5=-66.2<BR>\n" );
document.write( "y=-33.67<BR>\n" );
document.write( "-- </SPAN>\n" );
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