document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=229752>Question 229752</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve by substitution: 3b+ 2a=2, -2b+a=8 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #170299 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=170299\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 3b+2a=2<BR>\n" );
document.write( "-2b+a=8<BR>\n" );
document.write( "a=2b+8 Now replace a in the first equation with (2b+8) & solve for b.<BR>\n" );
document.write( "3b+2(2b+8)=2<BR>\n" );
document.write( "3b+4b+16=2<BR>\n" );
document.write( "7b=2-16<BR>\n" );
document.write( "7b=-14 <BR>\n" );
document.write( "b=-14/7<BR>\n" );
document.write( "b=-2 ans.<BR>\n" );
document.write( "a=2*-2+8<BR>\n" );
document.write( "a=-4+8<BR>\n" );
document.write( "a=4 ans.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "3*-2+2*4=2<BR>\n" );
document.write( "-6+8=2<BR>\n" );
document.write( "2=2 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );