The model shows the addition expression 18 + 12.

A model containing 3 rows of 6 orange squares and 3 rows of 4 blue squares.

One expression that is equivalent to this sum is
.

Respuesta :

Answer:

It's simple.

Step-by-step explanation:

now since you solved some of it, 18 + 12 = 30 An expression that is equivalent to this sum is 30.