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Find the greatest common factor of 9,15, and 63

Find the greatest common factor of 9,15, and 63
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Find the greatest common factor of 9,15, and 63

User Gary Gauh
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The greatest common factor of 9,15 and 63 is 3
User Gries
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9|3\\3|3\\1|\\9=\fbox3\cdot3\\\\15|3\\.\ 5|5\\.\ 1\\15=\fbox3\cdot5\\\\63|3\\21|3\\.\ 7|7\\.\ 1|\\63=\fbox3\cdot3\cdot7\\\\\huge\boxed{GCF(9;\ 15;\ 63)=\fbox3}
User Pavel Bariev
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