What if a simple calculation could sow doubt in the minds of thousands of people? On social media, a seemingly basic equation sparked a real debate. Some were certain of their answer… before realizing they were wrong. So, was it a trap or a simple oversight? You might be surprised by the answer.
This calculation that makes everyone doubt
Here’s the equation that’s driving the internet crazy:
3 × 3 − 3 ÷ 3 + 3
At first glance, nothing complicated. Yet, many fall into the trap by going too fast.
Some people read the expression from left to right without thinking it through. Result: an incorrect answer.
And that’s where everything happens.
Why do we make mistakes so easily?
The problem does not stem from the calculation itself, but from the method used.
When faced with a series of operations, our brain tends to go for the simplest solution: calculating in the order of reading.
But in mathematics, there is one essential rule to follow. And that’s what makes all the difference.
The rule you absolutely need to know
To avoid errors, a rule called order of operations (or BODMAS / PEMDAS depending on the country) is used.
It defines the order in which to perform the calculations:
Parentheses
Orders (powers)
Multiplication and division (from left to right)
Addition and subtraction (from left to right)
In other words, we don’t calculate everything in order… but according to a precise logic.
Let’s solve it together, step by step.
Let’s now apply this rule to our equation:
We begin with multiplication and division:
3 × 3 = 9
3 ÷ 3 = 1
The equation therefore becomes:
9 − 1 + 3
We finish with addition and subtraction:
9 − 1 = 8
8 + 3 = 11
Final result: 11
Why is this type of calculation going viral?
This kind of equation works perfectly on social media for one simple reason: it plays on our automatic responses.
We think we have the right answer in a few seconds… but without correctly applying the rules, the error is almost inevitable.
And it is precisely this little trap that makes these challenges so popular.
An excellent exercise to keep the mind sharp
Beyond the hype, this type of problem also has a very positive side.
He reminds us of the importance of taking the time to reflect, even when faced with something that seems obvious. A good way to stimulate your brain and revisit basic concepts that are sometimes forgotten.
And between us, admit it, it always feels good to succeed at a little challenge like this.
Sometimes, the simplest calculations are the ones that remind us that a little method is better than rushing. Simple tip
