document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1155559>Question 1155559</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solving:\r<BR>\n" );
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document.write( "      5 x-3y = 18 <BR>\n" );
document.write( "      -3 x-3y = -12 \r<BR>\n" );
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document.write( "Using Substitution Method.\r<BR>\n" );
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document.write( "Expressing x as a function of y (from the first equation) x = (18  +3y)/5\r<BR>\n" );
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document.write( "Substituting this expression into the second equation:\r<BR>\n" );
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document.write( "	-3 (18 -3y)/5-3y = -12 \r<BR>\n" );
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document.write( "Why is this not -3(18+3y)/5-3y = -12 ?<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 #778156 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=778156\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solving:<BR>\n" );
document.write( "5x - 3y = 18<BR>\n" );
document.write( "-3x - 3y - -12<BR>\n" );
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document.write( "There is a lot simpler way to do this<BR>\n" );
document.write( "-3x -3y = -12<BR>\n" );
document.write( "simplify, divide -3<BR>\n" );
document.write( "x + y = 4<BR>\n" );
document.write( "y = -x+4<BR>\n" );
document.write( "Using Substitution Method.<BR>\n" );
document.write( "Replace y with (-x+4) in the first equation<BR>\n" );
document.write( "5x - 3(-x+4) = 18<BR>\n" );
document.write( "distribute the -3<BR>\n" );
document.write( "5x + 3x - 12 = 18<BR>\n" );
document.write( "8x = 18 + 12<BR>\n" );
document.write( "8x = 30<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30%2F8 ALIGN=MIDDLE  ALT=\"30%2F8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = 3.75<BR>\n" );
document.write( "find y<BR>\n" );
document.write( "y = -x + 4<BR>\n" );
document.write( "y = -3.75 + 4<BR>\n" );
document.write( "y = .25<BR>\n" );
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document.write( "Check solutions in the 1st equation<BR>\n" );
document.write( "5x - 3y = 18<BR>\n" );
document.write( "replace x & y<BR>\n" );
document.write( "5(3.75) - 3(.25) = 18<BR>\n" );
document.write( "18.75 - .75 = 18<BR>\n" );
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