document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=172825>Question 172825</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve by elimination: x+7y=30, 9x+6y=99\r<BR>\n" );
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document.write( "It really helps me to understand if I can See each step to solve this problem written out like in a math book. Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #127678 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=127678\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+7y=30 multiply by -9 & add.<BR>\n" );
document.write( "9x+6y=99<BR>\n" );
document.write( "-9x-63y=-270<BR>\n" );
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document.write( "-57y=--171<BR>\n" );
document.write( "y=-171/-57<BR>\n" );
document.write( "y=3 ans.<BR>\n" );
document.write( "x+7*3=30<BR>\n" );
document.write( "x+21=30<BR>\n" );
document.write( "x=30-21<BR>\n" );
document.write( "x=9 ans.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "9*9+6*3=99<BR>\n" );
document.write( "81+18=99<BR>\n" );
document.write( "99=99<BR>\n" );
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