Brain Test Math Trick
Brain Test Level 621: How can it be correct?
Brain Test Level 621
Expert
Screenshots

Quick Answer
Rub the left side of the number '8' to erase it, turning it into a '3' to make the equation correct.
Skills Tested
LogicProblem Solving
Step-by-Step Solution
- 1) Look at the equation that is not correct.
- 2) Find the number 8 in the equation.
- 3) Rub the left side of the 8 to erase it.
- 4) See the 8 turn into a 3 and the equation balance.
Hint
Reveal a hint
Erase part of the 8 to make a 3.
Why It Works
The original digits do not satisfy the equation. Rubbing the left half of the 8 reveals a 3, and this new value makes the whole equation correct.
Frequently asked questions
How do I make the equation correct in Brain Test level 621?
Erase the left side of the 8 so it becomes a 3, which fixes the equation.
What is the answer to Brain Test level 621?
Rub the 8 into a 3 by erasing its left side, making the math balance.
Why turn 8 into 3 in Brain Test level 621?
The 3 makes the arithmetic work, so erasing part of the 8 gives the correct value.
What is the trick in Brain Test level 621?
The trick is reshaping the 8 into a 3 instead of changing the operation signs.
How do I erase the 8 in Brain Test level 621?
Rub across the left side of the 8 until only the right side remains as a 3.
Is there a video walkthrough for Brain Test level 621?
Yes, the embedded video shows the 8 being rubbed into a 3.