document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=120966>Question 120966</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve each of the following systems by substitution\r<BR>\n" );
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document.write( "5x - 2y = -5<BR>\n" );
document.write( " y - 5x =  3\r<BR>\n" );
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document.write( "Please help, I understand the addition method but not the substitution </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #88764 by </B><A HREF=/tutors/aboutme.mpl?userid=nabla><B>nabla(475)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nabla><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=88764\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve the first equation for y:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%285%2F2%29x%2B5%2F2 ALIGN=MIDDLE  ALT=\"y=%285%2F2%29x%2B5%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Substitute this into the second equation for y:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%285%2F2%29x%2B5%2F2-5x=3 ALIGN=MIDDLE  ALT=\"%285%2F2%29x%2B5%2F2-5x=3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-5%2F2%29x=1%2F2 ALIGN=MIDDLE  ALT=\"%28-5%2F2%29x=1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-1%2F5 ALIGN=MIDDLE  ALT=\"x=-1%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Substitute this x into the first equation we found:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%285%2F2%29%28-1%2F5%29%2B5%2F2=-1%2F2%2B5%2F2=2 ALIGN=MIDDLE  ALT=\"y=%285%2F2%29%28-1%2F5%29%2B5%2F2=-1%2F2%2B5%2F2=2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Which gives solution set S={(-1/5,2)}\r<BR>\n" );
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document.write( "I will leave the check up to you.\r<BR>\n" );
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document.write( "In sum:<BR>\n" );
document.write( "1) Solve one of the equations for a variable, generally y.<BR>\n" );
document.write( "2) Plug the y gotten in step 1 into the other equation.<BR>\n" );
document.write( "3) Solve for the other variable in this new equation (generally x).<BR>\n" );
document.write( "4) Plug the value of x into the equation gotten in step 1 for the value of y.<BR>\n" );
document.write( "5. Check </SPAN>\n" );
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