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

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.

no

step-by-step explanation:

2-7=-5

7-2=5

when you combing like terms for ech expression, 5 and -5. these numbers are not equal to each other.

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.