document.write( "Question 398126: How can I determine the LCD by inspection and by division of prime numbers, such as 3/4,7/12,5/6,1/5?\r
\n" ); document.write( "\n" ); document.write( "Thank you very much.\r
\n" ); document.write( "\n" ); document.write( "Ellie
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Algebra.Com's Answer #282115 by stanbon(75887)\"\" \"About 
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How can I determine the LCD by inspection and by division of prime numbers, such as 3/4,7/12,5/6,1/5?
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\n" ); document.write( "Prime factor form of the denominators:
\n" ); document.write( "4 = 2^2
\n" ); document.write( "12 = 2^2*3
\n" ); document.write( "6 = 2*3
\n" ); document.write( "5 = 5
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\n" ); document.write( "The LCD must contain each prime factor in its highest power:
\n" ); document.write( "LCD = 2^2*3*5 = 60
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\n" ); document.write( "Convert each fraction to a fraction with the LCD as its denominator:
\n" ); document.write( "3/4 = (3/4)(15/15) = 12/60
\n" ); document.write( "7/12 = (7/12)(5/5) = 35/60
\n" ); document.write( "5/6 = (5/6)(10/10) = 50/60
\n" ); document.write( "1/5 = (1/5)(12/12) = 12/60
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\n" ); document.write( "cheers,
\n" ); document.write( "Stan H.
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