document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=542490>Question 542490</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Substitution\r<BR>\n" );
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document.write( "x+3y=7\r<BR>\n" );
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document.write( "3x=9-5y </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #354590 by </B><A HREF=/tutors/aboutme.mpl?userid=friesr><B>friesr(113)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=friesr><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=354590\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> lets set first equal to y<BR>\n" );
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document.write( "3y=-x+7<BR>\n" );
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document.write( "y=-1/3x + 7/3<BR>\n" );
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document.write( "Sub in to second problem:<BR>\n" );
document.write( "3x=9-5*(-1/3x+7/3)<BR>\n" );
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document.write( "x=-2<BR>\n" );
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document.write( "now put -2 in for x in first<BR>\n" );
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document.write( "-2+3y=7<BR>\n" );
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document.write( "3y=9<BR>\n" );
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document.write( "y=3<BR>\n" );
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document.write( "hope this helps </SPAN>\n" );
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