document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=487670>Question 487670</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I'm trying to solve an algebra problem and the examples in the book are very confusing.<BR>\n" );
document.write( "I need to use the substitution method.\r<BR>\n" );
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document.write( "x-y=5<BR>\n" );
document.write( "x+2y=7\r<BR>\n" );
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document.write( "If you could just show me the work to reach the solution, I think I can do the rest of the problem? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #333100 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=333100\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> use the substitution method.<BR>\n" );
document.write( "x - y = 5<BR>\n" );
document.write( "x + 2y = 7 <BR>\n" );
document.write( "Choose which equation you are going to use to substitute, we will choose the 1st one<BR>\n" );
document.write( "x - y = 5<BR>\n" );
document.write( "add y to both sides<BR>\n" );
document.write( "x = (y + 5)<BR>\n" );
document.write( ":<BR>\n" );
document.write( "now on the 2nd equation we can substitute (y+5) for x<BR>\n" );
document.write( "x + 2y = 7<BR>\n" );
document.write( "substitute<BR>\n" );
document.write( "(y+5) + 2y = 7<BR>\n" );
document.write( "subtract 5 from both sides<BR>\n" );
document.write( "y + 2y = 7 - 5<BR>\n" );
document.write( "3y = 2<BR>\n" );
document.write( "Divide both sides by 3<BR>\n" );
document.write( "y = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F3 ALIGN=MIDDLE  ALT=\"2%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "Find x:<BR>\n" );
document.write( "we know that x = y + 5<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F3 ALIGN=MIDDLE  ALT=\"2%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 5<BR>\n" );
document.write( "x = 5<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F3 ALIGN=MIDDLE  ALT=\"2%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "Check solutions in the 2nd equation<BR>\n" );
document.write( "x + 2y = 7<BR>\n" );
document.write( "5<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F3 ALIGN=MIDDLE  ALT=\"2%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 2(<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F3 ALIGN=MIDDLE  ALT=\"2%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >) = 7<BR>\n" );
document.write( "5<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F3 ALIGN=MIDDLE  ALT=\"2%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2F3 ALIGN=MIDDLE  ALT=\"4%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 7<BR>\n" );
document.write( "5<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F3 ALIGN=MIDDLE  ALT=\"2%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 1<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3 ALIGN=MIDDLE  ALT=\"1%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 7; confirms our solution\r<BR>\n" );
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document.write( " </SPAN>\n" );
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