Brain Test All-Star Math Trick
Brain Test All-Star Level 412: Correct this equation please.
Brain Test All-Star Level 412
Hard
Screenshots

Quick Answer
Rub the number '1' in '19' to erase it, making the equation 4 + 5 = 9.
Skills Tested
LogicProblem Solving
Step-by-Step Solution
- 1) Look at the equation 4 + 5 = 19.
- 2) Rub the number '1' in '19'.
- 3) The 19 becomes 9.
- 4) The equation now reads 4 + 5 = 9.
Hint
Reveal a hint
Erase one digit from the number on the right side of the equation.
Why It Works
This math-trick puzzle lets you edit the numbers by rubbing them. Removing the leading 1 from 19 fixes the equation so both sides match.
Frequently asked questions
How do I solve Brain Test All-Star Level 412?
Rub the number '1' in '19' to erase it, making the equation 4 + 5 = 9.
What is the answer to Brain Test All-Star Level 412?
Erase the 1 from 19 so the equation becomes 4 + 5 = 9.
What is the trick in Brain Test All-Star Level 412?
Rubbing out a digit changes 19 into 9 and fixes the equation.
Why do I need to rub the number in Brain Test All-Star Level 412?
Removing the 1 from 19 makes the right side equal 4 + 5, which is 9.
Is there a video walkthrough for Brain Test All-Star Level 412?
Yes. The embedded video shows rubbing out the digit 1.
How do I avoid getting stuck in Brain Test All-Star Level 412?
Rub only the digit 1 in 19; erasing other parts will not fix the equation.