Final answer:
Option D (2j)k=2(jk) does not belong with the other three because it represents the associative property of multiplication, while options A, B, and C depict the commutative property of addition or multiplication.
Step-by-step explanation:
The property that does NOT belong with the other three is option D. Options A, B, and C all demonstrate the commutative property of addition or multiplication, meaning that the order of the operands does not affect the result of the operation. Specifically:
- A. x+12=12+x (Commutative property of addition)
- B. 7h=h·7 (Commutative property of multiplication)
- C. 1+a=a+1 (Commutative property of addition)
However, option D, (2j)k=2(jk), is an example of the associative property of multiplication, which states that the way in which factors are grouped in a multiplication problem does not change the product.