document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1062309>Question 1062309</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello there. I have been wondering how to do this question all day, you see algebra is not my strongest point and I was hoping if you could help me.\r<BR>\n" );
document.write( "\n" );
document.write( "Here is the question\r<BR>\n" );
document.write( "\n" );
document.write( "Look at these simultaneous questions.<BR>\n" );
document.write( "a+b+c=10<BR>\n" );
document.write( "a+b-c=3\r<BR>\n" );
document.write( "\n" );
document.write( "Find the value of a+b+3c\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Thank you very much. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #677181 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=677181\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a+b+c=10<BR>\n" );
document.write( "a+b-c=3 <BR>\n" );
document.write( "solve for c in each<BR>\n" );
document.write( "c=10-a-b<BR>\n" );
document.write( "c=a+b-3<BR>\n" );
document.write( "Set those two equal to each other<BR>\n" );
document.write( "a+b-3=10-a-b<BR>\n" );
document.write( "2a+2b=13<BR>\n" );
document.write( "a+b=6.5, dividing both sides by 2<BR>\n" );
document.write( "now substitute that into both equations<BR>\n" );
document.write( "6.5+c=10<BR>\n" );
document.write( "6.5-c=3<BR>\n" );
document.write( "Both will give c=3.5<BR>\n" );
document.write( "Therefore, a+b+3c=6.5+3(3.5)=6.5+10.5=17 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );