It seems you're working with a symbolic puzzle. Let's break it down step by step. You have:

□ + □ = 15
+     l
□ + □ = 15
=     =
12    2

This looks like a puzzle with blank spaces where the "□" represents a number or variable, and we have to solve the relationships between them.

Interpretation:

• You might have two equations:
  1. □ + □ = 15
  2. □ + □ = 15
     However, there are lines and numbers like "12" and "2" below the equations, indicating another level of the puzzle (possibly operations or comparisons).

To solve this puzzle, I’ll need clarification:

• Should the numbers 12 and 2 replace some blanks or are they results of some calculations?

Feel free to clarify, and we can work through it together.

---

Here are some possible questions:

1. Should we interpret the blanks as single digits?
2. Do the vertical lines between the equations indicate some additional operation?
3. Are 12 and 2 the final answers or intermediate results?
4. Should we consider the two equations as connected or independent?
5. Could this represent some form of cryptarithm or symbolic puzzle?

Tip: In puzzles like these, pay close attention to patterns, symmetry, or hidden relationships between the numbers and symbols.