Question

Tell the property used in each of the steps. One point each for each correct property.
Steps Property
k + (k + 2) Given
= (k + k) + 2 A
= (1• k + 1 • k) + 2 B
= (1 + 1)k + 2 C
= 2k + 2 D

Answer 1

Plz help

Answer 2

I just don't understand properties that well, they confuse me.