To rewrite the expression \( (63 + 81) \) using the Greatest Common Factor (GCF), we first need to find the GCF of the two numbers, 63 and 81.
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Find the factors:
- The factors of 63 are: \( 1, 3, 7, 9, 21, 63 \).
- The factors of 81 are: \( 1, 3, 9, 27, 81 \).
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Identify the GCF:
- The common factors of 63 and 81 are: \( 1, 3, 9 \).
- The greatest of these is \( 9 \).
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Factor out the GCF from each term:
- Rewrite \( 63 \) as \( 9 \times 7 \).
- Rewrite \( 81 \) as \( 9 \times 9 \).
Now we can rewrite the expression as:
\[ (63 + 81) = (9 \times 7 + 9 \times 9) = 9(7 + 9) \]
So, in the format you provided:
\[ (63 + 81) = (9(7) + 9(9)) = (9(7 + 9)) \]
Therefore, the final answer is:
\[ (63 + 81) = (9 \times 7 + 9 \times 9) = 9(7 + 9) \]