Question

complete the equation, and tell which property you used 11+(19+6)=(11+)+6

Answer 1

Properties:

1) a+ b = b+a      Commutative

2) (a + b) + c = a + (b+c)        Associative

3) a(b+c) = ab + ac            Distributive

Here we are given

11 + (19 + 6) = (11 +___) + 6

The number 19 is missing on the right.

So we have

11 + (19 + 6) = (11 +19) + 6

This looks like Property 2 above.

Hence it is associative property.