document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=185602>Question 185602</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve Problems Using Linear Systems<BR>\n" );
document.write( "6. Consider the linear systems<BR>\n" );
document.write( "3x-y=8<BR>\n" );
document.write( "4x-y=-15<BR>\n" );
document.write( "a) Which method would you choose to solve the linear systems and why? Solve using the method you chose.<BR>\n" );
document.write( "b) Now solve using one of the other methods available to you.<BR>\n" );
document.write( "(The answer is: a)(-23, -77) and b) (-23,-77), but i dont know how to solve it?) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #139261 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=139261\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 3x-y=8 multiply this equation by -1 & add them.<BR>\n" );
document.write( "4x-y=-15<BR>\n" );
document.write( "-3x+y=-8<BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "x=-23 ans.<BR>\n" );
document.write( "3*-23-y=8<BR>\n" );
document.write( "-69-y=8<BR>\n" );
document.write( "-y=8+69<BR>\n" );
document.write( "-y=77<BR>\n" );
document.write( "y=-77 ans.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "4*-23-(-77)=-15<BR>\n" );
document.write( "-92+77=-15<BR>\n" );
document.write( "-15=-15<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );