document.write( "Question 106671: greatest common factor of 63, 147, and 273 \n" ); document.write( "
Algebra.Com's Answer #77630 by Earlsdon(6294)\"\" \"About 
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Find the GCF of 63, 147, and 273
\n" ); document.write( "You can use prime factorisation to find the GCF of these integers.\r
\n" ); document.write( "\n" ); document.write( "63 = 3*3*7
\n" ); document.write( "147 = 3*7*7
\n" ); document.write( "273 = 3*7*13
\n" ); document.write( "Now select the factors that are common to the three lists of prime factors and multiply them.
\n" ); document.write( "These are 3 and 7
\n" ); document.write( "So the GCF = 3*7 = 21
\n" ); document.write( "Check:
\n" ); document.write( "63 = 3*21
\n" ); document.write( "147 = 7*21
\n" ); document.write( "273 = 13*21
\n" ); document.write( "
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