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Kisachek [45]
4 years ago
9

(a.) what is the GCF of 33 and 42 using prime factors?

Mathematics
1 answer:
Gennadij [26K]4 years ago
6 0
(a)\\33|\fbox3\\11|11\\.\ 1|\\---------\\42|2\\21|\fbox3\\.\ 7|7\\.\ 1|\\----------\\GCF(33;\ 42)=3


(b)\\2\underline{|72\ \ \ \ \ 30}\\.3\underline{|36\ \ \ \ \ 15}\\...\underline{|12\ \ \ \ \ \ 5}\\\\GCF(72;\ 30)=2\times3=6


(c)\\factors\ of\ 27:\ \fbox1;\ 3;\ 9;\ 27\\\\factors\ of\ 76:\ \fbox1;\ 2;\ 4;\ 19;\ 38;\ 76\\\\factors\ of\ 34:\ \fbox1;\ 2;\ 17;\ 34\\\\GCF(27;\ 76;\ 34)=1\\\\The\ numbers\ 27;\ 76\ and\ 34\ are\ coprime\ numbers.
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