What property is shown ?

-8+(-15)=(-15)+(-8)

a) commutative property

b) associative property

c) opposite of a sum property

d) distributive property

34 cup. a serving of vegetable soup is 23 cup. the restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. how many more cups of chicken noodle soup did they sell than cups of vegetable soup?

If w = 6 units, x = 3 units, and y = 5 units, what is the surface area of the figure? 168 units2 240 units2 144 units2 96 units2

W-16=-12 solve each one step equation plz