Question

this picture models the addition expression \\(15 + 21\\).
an example of an equivalent expression is

Explanation:

Analyze the visual model

The grid has 3 rows. The pink section has 5 columns, representing \(3 \times 5 = 15\). The blue section has 7 columns, representing \(3 \times 7 = 21\). Together, they model the addition expression \(15 + 21\).

Find the greatest common factor

Using the Greatest Common Factor knowledge point

$$
LATEXBLOCK0
$$

Apply the distributive property

Using the Distributive Property knowledge point

$$
LATEXBLOCK1
$$

Answer:

This picture models the addition expression \(15 + 21\).

An example of an equivalent expression is <blank>\(3(5 + 7)\)</blank>