Answer:
X: The x is represented with a circle and a x in the middle.
9: The 9 is represented with the squares on the left side that have the ones. The whole left side is devoted to the 9.
3: The 3 is represented with the right side. Aka the three circles.
X + 2: The x + 2 is represented with one circle that has 1 x and 2 1's.
3(X + 2): The 3(x + 2) is represented by the whole right side.
Equal Sign: The equal sign is the top that connects both the left and right side.