document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=630252>Question 630252</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a/b x c/d=1, what is the value of ac-bd?\r<BR>\n" );
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document.write( "please include explanations!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #396864 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=396864\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (a/b)(c/d) = 1 ... Start with the given equation\r<BR>\n" );
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document.write( "a/b = 1(d/c) ... Multiply both sides by d/c.\r<BR>\n" );
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document.write( "a/b = d/c ... Multiply\r<BR>\n" );
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document.write( "a/b - d/c = 0 ... Subtract d/c from both sides.\r<BR>\n" );
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document.write( "(a/b)(c/c) - (d/c)(b/b) = 0 ... Multiply the first fraction by c/c and the second by b/b\r<BR>\n" );
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document.write( "ac/bc - bd/bc = 0 ... Multiply\r<BR>\n" );
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document.write( "(ac - bd)/bc = 0 ... Combine the fractions.\r<BR>\n" );
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document.write( "ac - bd = 0*bc ... Multiply both sides by bc.\r<BR>\n" );
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document.write( "ac - bd = <font color=\"red\">0</font> ... Multiply\r<BR>\n" );
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document.write( "So the answer is   ac - bd = <font color=\"red\">0</font>\r<BR>\n" );
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