document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=24435>Question 24435</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I understand how to do these but for sme reason this one is giving me a problem could you please help?\r<BR>\n" );
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document.write( "Use sustitution to solve: 2x+y=7<BR>\n" );
document.write( "                          5x-2y=4\r<BR>\n" );
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document.write( "thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #13012 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=13012\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve by substitution:<BR>\n" );
document.write( "1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x%2By+=+7 ALIGN=MIDDLE  ALT=\"2x%2By+=+7\"   DISABLED_style= \"max-width:90%; height:auto;\" > Write this in terms of y:<BR>\n" );
document.write( "1a)<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-2x%2B7 ALIGN=MIDDLE  ALT=\"y+=+-2x%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" > and substitute into equation 2) then solve for x. <BR>\n" );
document.write( "2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x-2y+=+4 ALIGN=MIDDLE  ALT=\"5x-2y+=+4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x-2%28-2x%2B7%29+=+4 ALIGN=MIDDLE  ALT=\"5x-2%28-2x%2B7%29+=+4\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify and solve for x.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x%2B4x-14+=+4 ALIGN=MIDDLE  ALT=\"5x%2B4x-14+=+4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9x-14+=+4 ALIGN=MIDDLE  ALT=\"9x-14+=+4\"   DISABLED_style= \"max-width:90%; height:auto;\" > Add 14 to both sides of the equation.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9x+=+18 ALIGN=MIDDLE  ALT=\"9x+=+18\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by 9.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+2 ALIGN=MIDDLE  ALT=\"x+=+2\"   DISABLED_style= \"max-width:90%; height:auto;\" > Now substitute this value of x into equation 1a) and solve for y.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-2x%2B7 ALIGN=MIDDLE  ALT=\"y+=+-2x%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-2%282%29%2B7 ALIGN=MIDDLE  ALT=\"y+=+-2%282%29%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-4%2B7 ALIGN=MIDDLE  ALT=\"y+=+-4%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+3 ALIGN=MIDDLE  ALT=\"y+=+3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The solution is: (2, 3)<BR>\n" );
document.write( "Here's the graphical solution: Red line is:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-2x%2B7 ALIGN=MIDDLE  ALT=\"y+=+-2x%2B7\"   DISABLED_style= \"max-width:90%; height:auto;\" > Green line is:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+%285%2F2%29x-2 ALIGN=MIDDLE  ALT=\"y+=+%285%2F2%29x-2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C200%2C-5%2C5%2C-5%2C8%2C-2x%2B7%2C%285%2F2%29x-2%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C200%2C-5%2C5%2C-5%2C8%2C-2x%2B7%2C%285%2F2%29x-2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );