document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=35309>Question 35309</A>: <I><SPAN STYLE=\"word-break: break-all;\"> help!!! solve the system by addition  -4x+7y=-10<BR>\n" );
document.write( "                                      x-5y=9    </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #21432 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley71><B>checkley71(8403)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley71><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=21432\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -4x+7y=-10<BR>\n" );
document.write( "x-5y=9       multiply the second equation by 4 and we get 4x-20y=36 now we add to the first equation thus\r<BR>\n" );
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document.write( "-4x+7y=-10<BR>\n" );
document.write( "4x-20y=36<BR>\n" );
document.write( "--------- which produces <BR>\n" );
document.write( "-13y=26 or y=26/-13 or y=-2 & -4x+7(-2)=-10 or -4x-14=-10 or -4x=4 or x=-1\r<BR>\n" );
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document.write( "proof -4(-1)+7*(-2)=-10 OR 4-14=-10 OR -10=-10 & -1-5(-2)=9 OR -1+10=9 OR 9=9<BR>\n" );
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