document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=330455>Question 330455</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this equation.\r<BR>\n" );
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document.write( "Use substitution, addition/subtraction, or linear combination to solve the linear system.\r<BR>\n" );
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document.write( "10r-9s=18<BR>\n" );
document.write( "6s+2r=1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #236862 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=236862\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 10r-9s=18.....................1<BR>\n" );
document.write( "6s+2r=1.......................2\r<BR>\n" );
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document.write( "multiply equation 2 by -5 and it to equation 1<BR>\n" );
document.write( "-30s-10r+10r-9s=-5+18<BR>\n" );
document.write( "-39s=+13<BR>\n" );
document.write( "s= 13/-39<BR>\n" );
document.write( "s=-1/3<BR>\n" );
document.write( "..<BR>\n" );
document.write( "plug the value of r in equation 1<BR>\n" );
document.write( "10r-9*-1/3= 18<BR>\n" );
document.write( "10r+3=18<BR>\n" );
document.write( "10r=15<BR>\n" );
document.write( "r=15/10<BR>\n" );
document.write( "r=3/2 </SPAN>\n" );
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