document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=830784>Question 830784</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 4 years ago my fathers age was 5 times my age.at present sum of our age is 50.what is fathers present age?sir kindly give me its step also? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #500855 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=500855\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ---<BR>\n" );
document.write( "x = father<BR>\n" );
document.write( "y = son<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x - 4 = 5(y - 4)<BR>\n" );
document.write( "x + y = 50<BR>\n" );
document.write( "---<BR>\n" );
document.write( "put the system of linear equations into standard form:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x - 4 = 5y - 20<BR>\n" );
document.write( "x + y = 50<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x - 5y = -16<BR>\n" );
document.write( "x + y = 50<BR>\n" );
document.write( "---<BR>\n" );
document.write( "copy and paste the above linear system in standard form into this matrix-method solver:<BR>\n" );
document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "solution by matrix method:<BR>\n" );
document.write( "x = father = 39<BR>\n" );
document.write( "y = son = 11<BR>\n" );
document.write( "---<BR>\n" );
document.write( "now by elimination:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "( x - 5y = -16 ) * -1<BR>\n" );
document.write( "x + y = 50<BR>\n" );
document.write( "---<BR>\n" );
document.write( "-x + 5y = 16<BR>\n" );
document.write( "x + y = 50<BR>\n" );
document.write( "---<BR>\n" );
document.write( "add the system:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "6y = 66<BR>\n" );
document.write( "y = 11<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x + 11 = 50<BR>\n" );
document.write( "x = 39<BR>\n" );
document.write( "---<BR>\n" );
document.write( "solution by elimination method:<BR>\n" );
document.write( "x = father = 39<BR>\n" );
document.write( "y = son = 11<BR>\n" );
document.write( "---<BR>\n" );
document.write( "the methods agree !<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve and graph linear equations:<BR>\n" );
document.write( "https://sooeet.com/math/linear-equation-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve quadratic equations, quadratic formula:<BR>\n" );
document.write( "https://sooeet.com/math/quadratic-formula-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve systems of linear equations up to 6-equations 6-variables:<BR>\n" );
document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );