document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=887395>Question 887395</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1f x+y =6,y+z =7 and x+z=9, what is the average of x,y and z?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #536584 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=536584\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Add the equations to get\r<BR>\n" );
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document.write( "x+y =6<BR>\n" );
document.write( "y+z =7<BR>\n" );
document.write( "x+z =9<BR>\n" );
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document.write( "2x+2y+2z=22\r<BR>\n" );
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document.write( "Factor out 2 \r<BR>\n" );
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document.write( "2x+2y+2z=22\r<BR>\n" );
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document.write( "2(x+y+z)=22\r<BR>\n" );
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document.write( "then divide both sides by 2\r<BR>\n" );
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document.write( "2(x+y+z)=22\r<BR>\n" );
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document.write( "2(x+y+z)/2=22/2\r<BR>\n" );
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document.write( "x+y+z = 11\r<BR>\n" );
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document.write( "Now we divide the sum of x,y,z by 3 to average x,y,z\r<BR>\n" );
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document.write( "(x+y+z)/3 = 11/3\r<BR>\n" );
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document.write( "So the mean or average of x,y,z is <font color=\"red\">11/3</font><BR>\n" );
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