Given:
The equation is:

To find:
The number that belongs in the green box and another box.
Solution:
We have,

Subtracting 2x from both sides, we get


Adding 2 on both sides, we get


We need to divide both sides by 3 to isolate the variable x.
On dividing both side by 3, we get

Therefore, the missing values are 3 and 3, and the required equation is
.