document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=712193>Question 712193</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve by the Elimination method 2a+3b=7, -2a+b=13 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #437830 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley79><B>checkley79(3341)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley79><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=437830\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2a+3b=7<BR>\n" );
document.write( "-2a+b=13 add<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "4b=20<BR>\n" );
document.write( "b=20/4<BR>\n" );
document.write( "b=5 ans.<BR>\n" );
document.write( "2a+3*5=7<BR>\n" );
document.write( "2a+15=7<BR>\n" );
document.write( "2a=7-15<BR>\n" );
document.write( "2a=-8<BR>\n" );
document.write( "a=-8/2<BR>\n" );
document.write( "a=-4 ans.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "-2*-4+5=13<BR>\n" );
document.write( "8+5=13<BR>\n" );
document.write( "13=13 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );