document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=174508>Question 174508</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help:\r<BR>\n" );
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document.write( "1.  Solve for X and Y in the following problems.  Make sure you show all your work.\r<BR>\n" );
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document.write( "a.   X + Y=6 ,  2X + Y = 8<BR>\n" );
document.write( "b.  7X + 3Y = 14 ,  5X + 9Y = 10<BR>\n" );
document.write( "c.  4X + Y = 16 ,    2X + 3Y = 24<BR>\n" );
document.write( "d.  12X + Y = 25 ,  8X - 2Y = 14\r<BR>\n" );
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document.write( "for \"a\" I have x=3, y=2...I just did it in my head but I'm having trouble with what formula to use and how to arrive at the answer step by step\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #129511 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=129511\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a.   X + Y=6  OR X=6-Y<BR>\n" );
document.write( "NOW REPLACE X IN THE SECOND EQUATION BY (6-Y) & SOLVE FOR Y.<BR>\n" );
document.write( "2X + Y = 8 <BR>\n" );
document.write( "2(6-Y)+Y=8<BR>\n" );
document.write( "12-2Y+Y=8<BR>\n" );
document.write( "-Y=8-12<BR>\n" );
document.write( "-Y=-4<BR>\n" );
document.write( "Y=4 ans. <BR>\n" );
document.write( "X=6-4<BR>\n" );
document.write( "X=2 ans.<BR>\n" );
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document.write( "b.7X + 3Y = 14 MULTIPLY BY -3 & ADD TO THE SECOND EQUATION<BR>\n" );
document.write( "5X + 9Y = 10<BR>\n" );
document.write( "-21X-9Y=-42<BR>\n" );
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document.write( "-16X=-32<BR>\n" );
document.write( "X=-32/-16<BR>\n" );
document.write( "X=2 ans.<BR>\n" );
document.write( "5*2+9Y=10<BR>\n" );
document.write( "10+9Y=10<BR>\n" );
document.write( "9Y=10-10<BR>\n" );
document.write( "9Y=0<BR>\n" );
document.write( "Y=0 ans.<BR>\n" );
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document.write( "c.  4X + Y = 16 OR Y=16-4X<BR>\n" );
document.write( "NOW REPLACE Y WITH (16-4X) IN THE SECOND EQUATION & SOLVE FOR X.<BR>\n" );
document.write( "2X + 3Y = 24<BR>\n" );
document.write( "2X+3(16-4X)=24<BR>\n" );
document.write( "2X+48-12X=24<BR>\n" );
document.write( "-10X=24-48<BR>\n" );
document.write( "-10X=-24<BR>\n" );
document.write( "X=-24/-10<BR>\n" );
document.write( "X=2.4 ans.<BR>\n" );
document.write( "4*2.4+Y=16<BR>\n" );
document.write( "9.6+Y=16<BR>\n" );
document.write( "Y=16-9.6<BR>\n" );
document.write( "Y=6.4 ans.<BR>\n" );
document.write( "d.  12X + Y = 25 OR Y=25-12X NOW REPLACE Y WITH (25-12X) IN THE SECOND EQUATION & SOLVE FOR X.<BR>\n" );
document.write( "8X - 2Y = 14<BR>\n" );
document.write( "8X-2(25-12X)=14<BR>\n" );
document.write( "8X-50+24X=14<BR>\n" );
document.write( "32X=14+50<BR>\n" );
document.write( "32X=64<BR>\n" );
document.write( "X=64/32<BR>\n" );
document.write( "X=2 ans.<BR>\n" );
document.write( "12*2+Y=25<BR>\n" );
document.write( "24+Y=25<BR>\n" );
document.write( "Y=25-24<BR>\n" );
document.write( "Y=1 ans.<BR>\n" );
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