Final answer:
The expression that would be easier to simplify using the associative property to change the grouping is (60+40) + (-27).
Step-by-step explanation:
Out of the given options, the expression that would be easier to simplify using the associative property to change the grouping is option A: (60+40) + (-27). In this expression, we can group the numbers 60 and 40 together using the associative property before adding -27 to the sum. This makes it easier to perform the addition.