Donna initially cut her pizza into 12 slices.
She ate half of it for lunch, so she ate 12/2 = 6 slices.
After eating 6 slices, Donna has 12 - 6 = 6 slices of pizza left.
For dinner, she ate 1/3 of the remaining pizza, so she ate 6/3 = 2 slices.
After eating 2 slices for dinner, Donna has 6 - 2 = 4 slices of pizza left for her lunch tomorrow.
#### 4
The answer is: 4
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
If Donna initially cut her pizza into 12 slices and ate half of it for lunch, and then ate 1/3 of the remaining pizza for dinner, how many slices of pizza are left for Donna's lunch tomorrow?

### Answer:
