document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=225857>Question 225857</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a certain number is addedto the numerator and denminator of 7/15, the result is 1/3, find the number? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #168497 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=168497\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f a certain number is added to the numerator and denominator of 7/15, the result is 1/3, find the number?<BR>\n" );
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document.write( "let x = \"the number\"<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2B7%29%2F%28x%2B15%29 ALIGN=MIDDLE  ALT=\"%28x%2B7%29%2F%28x%2B15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3 ALIGN=MIDDLE  ALT=\"1%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "cross multiply<BR>\n" );
document.write( "3(x + 7) = 1(x + 15)<BR>\n" );
document.write( "3x + 21 = x + 15<BR>\n" );
document.write( "3x - x = 15 - 21<BR>\n" );
document.write( "2x = -6<BR>\n" );
document.write( "x = -3 is the certain number<BR>\n" );
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document.write( "Check<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-3%2B7%29%2F%28-3%2B15%29 ALIGN=MIDDLE  ALT=\"%28-3%2B7%29%2F%28-3%2B15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3 ALIGN=MIDDLE  ALT=\"1%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284%29%2F%2812%29 ALIGN=MIDDLE  ALT=\"%284%29%2F%2812%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3 ALIGN=MIDDLE  ALT=\"1%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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