document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=183855>Question 183855</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Method Substitution <BR>\n" );
document.write( "5. Find the point of intersection of each pair of lines.<BR>\n" );
document.write( "b) 4x+2y=7<BR>\n" );
document.write( "     -x-y=6<BR>\n" );
document.write( "Please, i dont know how to do it thank you very much!!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #137950 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=137950\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the point of intersection of each pair of lines.<BR>\n" );
document.write( "b) 4x+2y=7<BR>\n" );
document.write( "-x-y=6<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Leave the 1st equation along;<BR>\n" );
document.write( "Multiply the 2nd equation by 4.<BR>\n" );
document.write( "----------------------------------<BR>\n" );
document.write( "4x + 2y = 7<BR>\n" );
document.write( "-4x- 4y = 24<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "Add the two equations to eliminate the x-terms:<BR>\n" );
document.write( "-2y = 31\r<BR>\n" );
document.write( "\n" );
document.write( "y = -31/2<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Substitute into -x-y = 6 to solve for \"x\":\r<BR>\n" );
document.write( "\n" );
document.write( "-x -(-31/2) = 6<BR>\n" );
document.write( "x + 31/2 = 12/2\r<BR>\n" );
document.write( "\n" );
document.write( "x = -19/2\r<BR>\n" );
document.write( "\n" );
document.write( "==========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );