Question

which statement of equality shows two expressions that both correctly represent the model below?

Answer 1

We have 8 units of 1 and 2 units of x.

We can group them as:

$8\cdot1+2x=8+2x=2(4+x)$

as 2 is the common factor.

Answer: the expression that correctly represents the sum of blocks is:

8+2x=2(4+x) [Second option]