To find the greatest common factor (GCF) of the expression \(18j + 27\), we can factor each term.
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Factor 18 and 27:
- The prime factorization of 18 is \(2 \times 3^2\).
- The prime factorization of 27 is \(3^3\).
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Now, the factors of each number:
- For 18: \(1, 2, 3, 6, 9, 18\)
- For 27: \(1, 3, 9, 27\)
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Identify the common factors: \(1, 3, 9\)
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The greatest of these common factors is \(9\).
Thus, the GCF of \(18j + 27\) is 9.