27
18
----
45
GCF of 45 = 15
Here is a word document on Greatest Common Factors and how to solve it.
Answer: 60 degrees
Explanation: If all angles are same, each angle is 60 degrees and adds up to 180.
Answer: 42
Step-by-step explanation: Subtract 81 from 123 ;) your welcome
The original expression is given by:

The correct way to rewrite the expression is given by:

For this, we use two properties:
Associative property:
The way of grouping the factors does not change the result of the multiplication:
Commutative property:
The order of the factors does not vary the product:
Anything more or less than 1 would result in a different outcome, and anything times 1 results in itself.