Answer:
9+8 = 8+9
91+0 = 91.
Step-by-step explanation:
Given expression 9+8.
We need to rewrite it using Commutative Property.
Note: According to Commutative Property of Addition
a + b = b + a
Therefore,
9+8 = 8+9
We just need to swap the positions of numbers.
Second expression : 91+0
We need to rewrite it using Identity.
According to Identity property of addition
a+0 = a.
When we add 0 to any number it gives same number.
Therefore,
91+0 = 91.
