document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=143784>Question 143784</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the following system of equations for the unknown variables. <BR>\n" );
document.write( "2x + y = 17 <BR>\n" );
document.write( "y + z = 6 <BR>\n" );
document.write( "x &#8211; z = 7 <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 #104714 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=104714\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> subtracting z from 2nd equation __ y=6-z\r<BR>\n" );
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document.write( "adding z to 3rd equation __ x=7+z\r<BR>\n" );
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document.write( "substituting into 1st equation __ 2(7+z)+(6-z)=17 __ distributing __ 14+2z+6-z=17\r<BR>\n" );
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document.write( "20+z=17 __ subtracting 20 __ z=-3\r<BR>\n" );
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document.write( "substituting __ y+(-3)=6 __ adding 3 __ y=9\r<BR>\n" );
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document.write( "substituting __ x-(-3)=7 __ adding -3 __ x=4 </SPAN>\n" );
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