document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=156745>Question 156745</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2x-2y=15<BR>\n" );
document.write( "4x+4y=10\r<BR>\n" );
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document.write( "Help, I need to solve for x and y </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #115578 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=115578\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve for x and y\"<BR>\n" );
document.write( "1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x-2y+=+15 ALIGN=MIDDLE  ALT=\"2x-2y+=+15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x%2B4y+=+10 ALIGN=MIDDLE  ALT=\"4x%2B4y+=+10\"   DISABLED_style= \"max-width:90%; height:auto;\" > First, multiply equation 1) by 2 to get:<BR>\n" );
document.write( "1a) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x-4y+=+30 ALIGN=MIDDLE  ALT=\"4x-4y+=+30\"   DISABLED_style= \"max-width:90%; height:auto;\" > now add this to equation 2) to eliminate the y's<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8x+=+40 ALIGN=MIDDLE  ALT=\"8x+=+40\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by 8.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+40%2F8 ALIGN=MIDDLE  ALT=\"x+=+40%2F8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+5 ALIGN=MIDDLE  ALT=\"x+=+5\"   DISABLED_style= \"max-width:90%; height:auto;\" > Now substitute this value of x into either equation 1) or eqation 2) to find y. Let's use equation 1)<BR>\n" );
document.write( "1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x-2y+=+15 ALIGN=MIDDLE  ALT=\"2x-2y+=+15\"   DISABLED_style= \"max-width:90%; height:auto;\" > Substitute x = 5.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%285%29-2y+=+15 ALIGN=MIDDLE  ALT=\"2%285%29-2y+=+15\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10-2y+=+15 ALIGN=MIDDLE  ALT=\"10-2y+=+15\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 10 from both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-2y+=+5 ALIGN=MIDDLE  ALT=\"-2y+=+5\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by -2.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-5%2F2 ALIGN=MIDDLE  ALT=\"y+=+-5%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The solution is: (5, -5/2)<BR>\n" );
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