document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=250211>Question 250211</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve the system of equations using the substitution method. write the solution as an ordered pair.\r<BR>\n" );
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document.write( "y=3x<BR>\n" );
document.write( "y-x=18 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #182146 by </B><A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><B>tutorcecilia(2152)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><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=tutorcecilia><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=182146\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y=3x<BR>\n" );
document.write( "y-x=18<BR>\n" );
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document.write( "y-x=18 [plug in y=3x for the y-term]<BR>\n" );
document.write( "(3x)-x=18 [solve for the x-term]<BR>\n" );
document.write( "2x=18<BR>\n" );
document.write( "2x/2=18/2<BR>\n" );
document.write( "x=9<BR>\n" );
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document.write( "y=3x [ plug-in x=9 into either equation and solve for the y-value]<BR>\n" );
document.write( "y=3(9)<BR>\n" );
document.write( "y=27<BR>\n" );
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document.write( "Check by plugging both x and y-values into either equation:<BR>\n" );
document.write( "y-x=18<BR>\n" );
document.write( "27-9=18<BR>\n" );
document.write( "18=18 [checks out]\r<BR>\n" );
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document.write( "Solution (9, 27)<BR>\n" );
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