document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=931739>Question 931739</A>: <I><SPAN STYLE=\"word-break: break-all;\"> you have total of 51 coins in your pocket. you only have quarters and dimes. the total value is $7.50. how many quarters and how many dimes do you have </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #565756 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=565756\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x = dimes<BR>\n" );
document.write( "y = quarters<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x + y = 51<BR>\n" );
document.write( "10x + 25y = 750<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 + y = 51<BR>\n" );
document.write( "10x + 25y = 750<BR>\n" );
document.write( "---<BR>\n" );
document.write( "copy and paste the above standard form linear equations in to this solver:<BR>\n" );
document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "solution:<BR>\n" );
document.write( "x = dimes = 35<BR>\n" );
document.write( "y = quarters = 16<BR>\n" );
document.write( "---<BR>\n" );
document.write( "now by substitution:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x + y = 51<BR>\n" );
document.write( "y = 51 - x<BR>\n" );
document.write( "10x + 25y = 750<BR>\n" );
document.write( "10x + 25(51 - x) = 750<BR>\n" );
document.write( "10x + 25*51 - 25x = 750<BR>\n" );
document.write( "-15x = 750 - 25*51<BR>\n" );
document.write( "x = (750 - 25*51)/-15<BR>\n" );
document.write( "x = 35<BR>\n" );
document.write( "y = 51 - x<BR>\n" );
document.write( "y = 51 - 35<BR>\n" );
document.write( "y = 16<BR>\n" );
document.write( "---<BR>\n" );
document.write( "solution by substitution:<BR>\n" );
document.write( "x = dimes = 35<BR>\n" );
document.write( "y = quarters = 16<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<BR>\n" );
document.write( "--- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );