The Viral Math Challenge: Can You Solve 6 - 3 × 5 + 4 Without Making the Classic Mistake?

At first glance, this math problem looks incredibly easy.

In fact, that's exactly why so many people get it wrong.

The challenge spreading across social media claims that 99% of people fail to solve it correctly, and while that number is almost certainly exaggerated, the puzzle does expose a common mistake that many of us make when solving equations too quickly.

Here's the expression:

6 - 3 × 5 + 4

Looks simple, right?

Most people glance at it for a few seconds, perform the calculations in their head, and confidently arrive at an answer.

Unfortunately, confidence and correctness aren't always the same thing.

The Trap Hidden Inside The Equation

The problem is designed to test whether you remember one of the most important rules in mathematics:

Not all operations are performed from left to right.

When an equation contains different operations such as multiplication, division, addition, and subtraction, there is a specific order that must be followed.

Many people ignore that rule and simply work across the equation from left to right.

That's where the mistakes begin.

The Wrong Way

A common incorrect approach looks like this:

6 - 3 = 3

3 × 5 = 15

15 + 4 = 19

This gives an answer of:

19

It seems reasonable at first.

The calculations themselves are correct.

The problem is that they were performed in the wrong order.

And in mathematics, the order matters just as much as the arithmetic.

The Rule You Need To Remember

Before solving the expression, recall the order of operations.

Most students learn it through acronyms such as PEMDAS or BODMAS.

The key idea is simple:

1. Parentheses or Brackets

2. Exponents or Orders

3. Multiplication and Division

4. Addition and Subtraction

Because multiplication comes before addition and subtraction, the multiplication must be completed first.

Solving The Problem Correctly

The expression is:

6-3\times5+4

Start with the multiplication:

3 × 5 = 15

The equation now becomes:

6 - 15 + 4

Next, work from left to right since only addition and subtraction remain.

6 - 15 = -9

-9 + 4 = -5

The Correct Answer

The correct answer is:

-5

If you got -5, congratulations.

You remembered the order of operations and avoided the trap.

Why So Many People Get It Wrong

Our brains love shortcuts.

When we see a simple expression, we often rush through it without slowing down to check the rules.

Social media puzzles take advantage of this tendency.

The creators know that many people will solve the equation too quickly, arrive at the wrong answer, and then rush to the comments to defend it.

That disagreement is exactly what helps these puzzles go viral.

Why These Math Puzzles Are So Addictive

Part of the fun comes from their simplicity.

The numbers are small.

The arithmetic is easy.

Yet people still end up with different answers.

When someone confidently posts an incorrect solution, others jump in to explain the mistake, creating endless debates.

It's a perfect recipe for engagement.

Challenge Your Friends

Now that you know the answer, try showing the problem to a friend without explaining the rules.

Ask them to solve:

6 - 3 × 5 + 4

See how quickly they answer.

You might be surprised by how many people forget the multiplication step comes first.

Sometimes the simplest-looking math problems are the ones that cause the biggest arguments.

So, did you get -5 on your first try, or did this viral puzzle manage to fool you?