document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=833305>Question 833305</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve : 3x+5y=7 and 4x-3y=-10. if (a,b) is the solution, what is the sum of a and b? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #502445 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=502445\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> solve : 3x+5y=7 and 4x-3y=-10. if (a,b) is the solution, what is the sum of a and b?<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "3x + 5y = 7<BR>\n" );
document.write( "4x - 3y = -10<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "Modify for elination:<BR>\n" );
document.write( "12x + 20y = 28<BR>\n" );
document.write( "12x -  9y = -30<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "Subtract and solve for \"y\":<BR>\n" );
document.write( "29y = 58<BR>\n" );
document.write( "y = 2<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Solve for \"x\":<BR>\n" );
document.write( "3x + 5y = 7<BR>\n" );
document.write( "3x + 10 = 7<BR>\n" );
document.write( "3x = -3<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "x = -1<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "(a,b) = (-1,2)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Ans: a*b = -2<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );