document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=932328>Question 932328</A>: <I><SPAN STYLE=\"word-break: break-all;\"> good evening,<BR>\n" );
document.write( "I am not sure if this is where I need to ask the question on solving system of equations using substitution (algebraically) but it is worth a try.<BR>\n" );
document.write( "we have a problem 7x-3y=23<BR>\n" );
document.write( "                  x +2y=13\r<BR>\n" );
document.write( "\n" );
document.write( "we can't seem to figure out how you would solve this one.  can you help with steps so we can understand<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #566120 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=566120\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a problem <BR>\n" );
document.write( "7x - 3y = 23<BR>\n" );
document.write( "x + 2y = 13 <BR>\n" );
document.write( "Arrange the 2nd equation for substitution in the 1st equation<BR>\n" );
document.write( "subtract 2x from both sides<BR>\n" );
document.write( "x = -2y + 13<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Replace x with (-2y+13) in the first equation<BR>\n" );
document.write( "7(-2y+13) - 3y = 23<BR>\n" );
document.write( "-14y + 91 - 3y = 23<BR>\n" );
document.write( "-17y = 23 - 91<BR>\n" );
document.write( "-17y = -68<BR>\n" );
document.write( "y = -68/-17<BR>\n" );
document.write( "y = +4<BR>\n" );
document.write( "Find x<BR>\n" );
document.write( "x = -2(4) + 13<BR>\n" );
document.write( "x = 5<BR>\n" );
document.write( ":<BR>\n" );
document.write( ";<BR>\n" );
document.write( "Check these solutions in the 1st equation 7x -3y - 23<BR>\n" );
document.write( "7(5) - 3(4) = 23<BR>\n" );
document.write( "35 - 12 = 23 </SPAN>\n" );
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