Question

Which property justifies this statement? 2+(8 + 9) = (2 + 8) +9

A. transitive

B. commutative

C. distributive

D. associative

Answer 1

Its the Associative property which is a + (b + c) = ( a + b ) + c

So its your option D
associative property

Answer 2

`Associative\ property:a+(b+c)=(a+b)+c\\\Downarrow\\2+(8+9)=(2+8)+9\\\\Your\ answer:\huge\boxed{D.\ associative}`