Answer:
Option A.
Step-by-step explanation:
Commutative property of addition says that if we add two or many numbers, order doesn't matter.
Let there are three numbers a, b, and c.
When we add them by commutative property, result will remain same.
If we add [(a + b)+ c] or [a + (b + c)], result will be same.
Therefore, 12x + 15x - 11x = (12 + 15 - 11)x
= (27 - 11)x
= 16x
Option A. Commutative property will be the answer.
