Final answer:
The expression 81 - 30 can be rewritten using the distributive property and GCF as 3(27 - 10), factoring out the common factor of 3.
Step-by-step explanation:
To rewrite the expression 81 - 30 using the distributive property and the Greatest Common Factor (GCF), we first identify the GCF of 81 and 30. The GCF of 81 and 30 is 3. Using the distributive property, we can factor out the GCF and rewrite the expression as:
3(27 - 10)
This indicates that both 81 and 30 can be divided by 3, and then 27 and 10 are the resulting numbers that are being subtracted within the parentheses.