Answer:
B.

Explanation:
Let x represent each blue rectangle and 1 represent each green figure.
We can see that there are 2 blue rectangles that would be
.
We can also see that there are 2 green figures on left side and 3 figures on right side of equation, we can represent this information in an equation as:

Combine like terms:

Subtract 2 from both sides:


Divide both sides by 2:


Therefore, option B is the correct choice.