Question

structures of expressions unit test
use the associative property to demonstrate that expression 1 is equivalent to expression 2.
expression 1: 22r - 13
expression 2: 19r+(3r - 2)-11
(2 points)
short answer rubric (2 points)
points awarded criteria
2 the answer is very clear.
the answer is fully supported by details.
there may be a few errors in grammar, usage, or mechanics. errors do not interfere with meaning.

Explanation:

Step1: Simplify Expression 2

$19r+(3r - 2)-11=(19r + 3r)+(-2-11)$ (using associative property of addition for like - terms)

Step2: Combine like - terms

$(19r + 3r)+(-2-11)=22r-13$

Answer:

Since simplifying Expression 2 using the associative property results in Expression 1 ($22r - 13$), the two expressions are equivalent.