document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=107324>Question 107324</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve the following sytems of equations \r<BR>\n" );
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document.write( "1.                         2.                          3.<BR>\n" );
document.write( "y=7x-8                     6x+7y=19                   3x-2y=4 <BR>\n" );
document.write( "y=3x-12                     x+y=5                2x+y=12                         </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #78147 by </B><A HREF=/tutors/aboutme.mpl?userid=elima><B>elima(1433)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=elima><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=78147\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Since it doesn't say which method to use, I will use the substitution method;<BR>\n" );
document.write( "1)y=7x-8                  <BR>\n" );
document.write( "  y=3x-12 <BR>\n" );
document.write( "Lets substitute y=3x-12 for y in the other equation<BR>\n" );
document.write( "(3x-12)=7x-8<BR>\n" );
document.write( "3x-7x=-8+12<BR>\n" );
document.write( "-4x=4<BR>\n" );
document.write( "x=-1<BR>\n" );
document.write( "Now plug that in for x in either equation;<BR>\n" );
document.write( "y=7(-1)-8<BR>\n" );
document.write( "y=-7-8<BR>\n" );
document.write( "y=-15<BR>\n" );
document.write( "========================================<BR>\n" );
document.write( "2)6x+7y=19<BR>\n" );
document.write( "   x+y=5<BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "for this one lets solve the second equation for x and then use that answer in the first equation;<BR>\n" );
document.write( "x=5-y<BR>\n" );
document.write( "6(5-y)+7y=19<BR>\n" );
document.write( "30-6y+7y=19<BR>\n" );
document.write( "y=19-30<BR>\n" );
document.write( "y=-11<BR>\n" );
document.write( "x-11=5<BR>\n" );
document.write( "x=5+11<BR>\n" );
document.write( "x=16<BR>\n" );
document.write( "=====================================<BR>\n" );
document.write( "3)3x-2y=4<BR>\n" );
document.write( "   2x+y=12<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "lets solve the second equation for y;<BR>\n" );
document.write( "y=12-2x<BR>\n" );
document.write( "-----------------------------<BR>\n" );
document.write( "3x-2(12-2x)=4<BR>\n" );
document.write( "3x-24+4x=4<BR>\n" );
document.write( "7x=4+24<BR>\n" );
document.write( "7x=28<BR>\n" );
document.write( "x=4<BR>\n" );
document.write( "2(4)+y=12<BR>\n" );
document.write( "8+y=12<BR>\n" );
document.write( "y=12-8<BR>\n" );
document.write( "y=4<BR>\n" );
document.write( ":) </SPAN>\n" );
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