document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=999643>Question 999643</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi. I have a test coming up and I'm studying for it. But I don't know how to solve it. Here is my question:<BR>\n" );
document.write( "For the following system, use the second equation to make a substitution for x in the first equation.<BR>\n" );
document.write( "x + 5 y - 10 = 0<BR>\n" );
document.write( "x = 2 y - 8<BR>\n" );
document.write( "What is the resulting equation in simplest form?<BR>\n" );
document.write( "My options were <BR>\n" );
document.write( "-3 y - 18 = 0<BR>\n" );
document.write( "3 y - 18 = 0<BR>\n" );
document.write( "7 y - 18 = 0<BR>\n" );
document.write( "7 y + 18 = 0<BR>\n" );
document.write( "I don't know which one please help. And thank you to who ever helps </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #617218 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=617218\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+%2B+5+y+-+10+=+0 ALIGN=MIDDLE  ALT=\"x+%2B+5+y+-+10+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >...1st eq.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+2+y+-+8 ALIGN=MIDDLE  ALT=\"x+=+2+y+-+8\"   DISABLED_style= \"max-width:90%; height:auto;\" >...2nd eq.<BR>\n" );
document.write( "-----------------------------\r<BR>\n" );
document.write( "\n" );
document.write( "make a substitution for x in the first equation\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282y+-+8%29+%2B+5y+-+10+=+0 ALIGN=MIDDLE  ALT=\"%282y+-+8%29+%2B+5y+-+10+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >...1st eq....solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y ALIGN=MIDDLE  ALT=\"y\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2y+-+8+%2B+5y+-+10+=+0 ALIGN=MIDDLE  ALT=\"2y+-+8+%2B+5y+-+10+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%287y+-+18++=+0%29 ALIGN=MIDDLE  ALT=\"highlight%287y+-+18++=+0%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=>the resulting equation in simplest form\r<BR>\n" );
document.write( "\n" );
document.write( "to find the solutions to the system solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y ALIGN=MIDDLE  ALT=\"y\"   DISABLED_style= \"max-width:90%; height:auto;\" >:\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7y+-+18++=+0 ALIGN=MIDDLE  ALT=\"7y+-+18++=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7y=+18 ALIGN=MIDDLE  ALT=\"7y=+18\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=+18%2F7%29 ALIGN=MIDDLE  ALT=\"highlight%28y=+18%2F7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=> exact solution\r<BR>\n" );
document.write( "\n" );
document.write( "now go back to 2nd eq., substitute <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y ALIGN=MIDDLE  ALT=\"y\"   DISABLED_style= \"max-width:90%; height:auto;\" > and find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+2+%2818%2F7%29+-+8 ALIGN=MIDDLE  ALT=\"x+=+2+%2818%2F7%29+-+8\"   DISABLED_style= \"max-width:90%; height:auto;\" >...2nd eq....write <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8 ALIGN=MIDDLE  ALT=\"8\"   DISABLED_style= \"max-width:90%; height:auto;\" > as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=56%2F7 ALIGN=MIDDLE  ALT=\"56%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+36%2F7+-+56%2F7 ALIGN=MIDDLE  ALT=\"x+=+36%2F7+-+56%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x+=+-+20%2F7%29 ALIGN=MIDDLE  ALT=\"highlight%28x+=+-+20%2F7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );