Answer:
- commutative property
- identity element
Step-by-step explanation:
-2/7+0 = 0+-2/7 . . . . commutative property of addition
The commutative property allows you to swap the order of operands being summed.
0+-2/7 = -2/7 . . . . identity element of addition
The identity element for addition is 0. That is, adding 0 to anything does not change its value.
