document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=50805>Question 50805</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please can you help me find x\r<BR>\n" );
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document.write( "-7x + 8y + 3y = 10<BR>\n" );
document.write( "28x/4 - 12y   = 7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #33831 by </B><A HREF=/tutors/aboutme.mpl?userid=darq><B>darq(90)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=darq><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=darq><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=33831\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -7x + 8y + 3y = 10<BR>\n" );
document.write( "28x/4 - 12y   = 7\r<BR>\n" );
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document.write( "-7x + 11y = 10<BR>\n" );
document.write( "7x - 12 y = 7\r<BR>\n" );
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document.write( "then all you need to do is adding the equations\r<BR>\n" );
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document.write( "(-7x + 11y) + (7x - 12y) = 10 + 7<BR>\n" );
document.write( "=) -7x + 11y + 7x - 12y = 17<BR>\n" );
document.write( "now you need to find the sum of x's and y's<BR>\n" );
document.write( "=) 7x-7x + 11y-12y = 17<BR>\n" );
document.write( "=) 0 + -y = 17<BR>\n" );
document.write( "so you got rid of x. now you need to multiply both sides with negative one.<BR>\n" );
document.write( "=) y = -17<BR>\n" );
document.write( "so we found the y. now all you need to do is to substitute it with one of the equations you gave. i chose \"28x/4 - 12y = 7\"\r<BR>\n" );
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document.write( "7x - 12(-17) = 7<BR>\n" );
document.write( "7x + 204 = 7<BR>\n" );
document.write( "now we need to have x in one side and the number in the other side<BR>\n" );
document.write( "7x = 7-204<BR>\n" );
document.write( "7x = -197<BR>\n" );
document.write( "you need to divide both sides wth \"7\"<BR>\n" );
document.write( "        ______<BR>\n" );
document.write( "x = -28,142857\r<BR>\n" );
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document.write( "if you want to show the x as a fraction it is -2 <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F7 ALIGN=MIDDLE  ALT=\"1%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "so that is it! </SPAN>\n" );
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