document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=549767>Question 549767</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, I am completely confused on how to do this equation. Here's the equation:\r<BR>\n" );
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document.write( "3x+2y=A<BR>\n" );
document.write( "5x+y=B\r<BR>\n" );
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document.write( "I have tried to work the problem out and I don't even know how to start.I have to solve this by the multiplication method to find x and y. Is there anyway you could help me please? Thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #358035 by </B><A HREF=/tutors/aboutme.mpl?userid=mathie123><B>mathie123(224)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mathie123><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=358035\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%2B2y=A ALIGN=MIDDLE  ALT=\"3x%2B2y=A\"   DISABLED_style= \"max-width:90%; height:auto;\" >   (1)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x%2By=B ALIGN=MIDDLE  ALT=\"5x%2By=B\"   DISABLED_style= \"max-width:90%; height:auto;\" >    (2)\r<BR>\n" );
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document.write( "There are many ways to do this, elimination, substitution, matrix..... I will use the elimination method (multiplication method). \r<BR>\n" );
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document.write( "I will eliminate the y variable (although it doesn't matter which one you choose).  <BR>\n" );
document.write( "I will multiply Equation (1) by the constant in front of y in Equation (2) (which is 1).  this does not change the equation. \r<BR>\n" );
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document.write( "I will then multiply the equation (2) by the constant in front of the y in equation (2) (which is 2).   This leaves:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10x%2B2y=2B ALIGN=MIDDLE  ALT=\"10x%2B2y=2B\"   DISABLED_style= \"max-width:90%; height:auto;\" >    (3)\r<BR>\n" );
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document.write( "Now subtracting Equation (3) from Equatin (1) we are left with:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%283x%2B2y%29-%2810x%2B2y%29=A-2B ALIGN=MIDDLE  ALT=\"%283x%2B2y%29-%2810x%2B2y%29=A-2B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-7x=A-2B ALIGN=MIDDLE  ALT=\"-7x=A-2B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "And solving for x we get:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=%28A-2B%29%2F-7 ALIGN=MIDDLE  ALT=\"x=%28A-2B%29%2F-7\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now substituting this value for x into Equation (2)  (Note: it doesn't matter where you sub this in, I choose equation (2) as y is already without a constant)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2A%28%28A-2B%29%2F-7%29%2By=B ALIGN=MIDDLE  ALT=\"5%2A%28%28A-2B%29%2F-7%29%2By=B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=B-5%2A%28%28A-2B%29%2F-7%29 ALIGN=MIDDLE  ALT=\"y=B-5%2A%28%28A-2B%29%2F-7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=B-5%2A%28%28A%2F-7%29-%282B%29%2F-7%29%29 ALIGN=MIDDLE  ALT=\"y=B-5%2A%28%28A%2F-7%29-%282B%29%2F-7%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=B%2B%285%2F7%29%2AA%2B%282%2F7%29%2AB ALIGN=MIDDLE  ALT=\"y=B%2B%285%2F7%29%2AA%2B%282%2F7%29%2AB\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%287%2F7%29%2AB%2B%285%2F7%29%2AA%2B%282%2F7%29%2AB ALIGN=MIDDLE  ALT=\"y=%287%2F7%29%2AB%2B%285%2F7%29%2AA%2B%282%2F7%29%2AB\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%289%2F7%29%2AB%2B%285%2F7%29%2AA ALIGN=MIDDLE  ALT=\"y=%289%2F7%29%2AB%2B%285%2F7%29%2AA\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "_________________________________________________________________<BR>\n" );
document.write( "Hopefully this helps a bit -- let me know if you are still unsure about anything<BR>\n" );
document.write( "Romans 5:8\r<BR>\n" );
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document.write( " </SPAN>\n" );
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