Did you get it right?
This black-background math puzzle is designed to stop the common quick guess. Parentheses and multiplication must be handled first.

The Answer
The correct answer is: 15.
Here is why
- 3+4=7
- 5脳7=35
- 50-35=15
Why people miss it
People often subtract from left to right too quickly and forget to solve the parentheses first.
What answer did you get before checking?