Which of the following correctly demonstrates the Associative Property of Addition?

Responses

(x+y)+z+r=x+(y+z)+r

y−(x+1)=(y−x)+1

x⋅(y+z)=(x⋅y)+z

m⋅(x⋅y)=(m⋅x)⋅y

1 answer

(x+y)+z+r=x+(y+z)+r correctly demonstrates the Associative Property of Addition.