Have you ever come across a math problem that seems easy at first glance, only to realize that most people get it wrong? The equation 9 – 9 ÷ 9 + 9 – 9 ÷ 9 = ? is one such puzzle that confuses many. It looks simple, but if you’re not careful, you might end up with the wrong answer.
Are you ready to put your math skills to the test? Take a moment to solve it before reading ahead. Think you got it right? Let’s find out!
Why Do So Many People Get This Wrong?
At first glance, this equation appears straightforward. However, small details in mathematical rules trip people up. Here are some common mistakes that lead to the wrong answer:
- Ignoring the Order of Operations (PEMDAS/BODMAS) – Many people solve the problem from left to right without following the correct order of operations.
- Misplacing Parentheses (Even When They Aren’t Written) – Some assume parentheses where there are none, changing how they approach division and subtraction.
- Rushing Through the Calculation – The problem is designed to look easy, so people tend to solve it quickly and overlook critical steps.
So, what’s the correct approach? Let’s break it down step by step.
Step-by-Step Solution
To solve this equation correctly, we must follow the order of operations. The most commonly used rule is PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).
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The given equation:
9 – 9 ÷ 9 + 9 – 9 ÷ 9
Step 1: Solve the Division First
According to PEMDAS, division comes before subtraction and addition. So, let’s divide first:
- 9÷9=19 ÷ 9 = 19÷9=1
- 9÷9=19 ÷ 9 = 19÷9=1
Now, substitute these values back into the equation:
9 – 1 + 9 – 1
Step 2: Perform Addition and Subtraction from Left to Right
Now, we calculate in order from left to right:
- 9 – 1 = 8
- 8 + 9 = 17
- 17 – 1 = 16
So, the correct answer is: 16
Common Incorrect Answers and Why They Happen
Many people arrive at incorrect answers because they don’t follow the correct order of operations. Here are some of the most common mistakes:
- Answer: 0 – This happens when someone groups all the numbers together without following PEMDAS, incorrectly simplifying the problem as:
9−9−9+9−9=09 – 9 – 9 + 9 – 9 = 09−9−9+9−9=0 - Answer: 1 – Some mistakenly subtract 9 from itself first before dividing, leading to:
(9−9)÷9+9−9÷9=1(9 – 9) ÷ 9 + 9 – 9 ÷ 9 = 1(9−9)÷9+9−9÷9=1
These errors reinforce the importance of following the correct mathematical rules step by step.
Why Understanding Order of Operations Matters
You might wonder—why does it even matter? Well, mathematics is built on logical rules, and following them correctly ensures we get consistent, accurate answers. The order of operations is used in everything from programming to engineering to everyday calculations.
Video : Only 1% of people pass this logic test
Think about it this way: If a recipe tells you to bake a cake at 350°F for 30 minutes before adding frosting, you wouldn’t reverse the steps, right? Math works the same way—sequence matters!
Put Your Skills to the Test
Did you get the correct answer? Share your response in the comments! Were you surprised by how easy it was to make a mistake?
If you enjoy solving puzzles like this, challenge your friends and see if they can get it right! Math riddles help improve problem-solving skills and boost logical thinking.
Want more brain teasers like this? Keep testing yourself with tricky puzzles and improve your critical thinking skills! Who knows? The next time you see a math problem like this, you might be among the 10% who get it right on the first try!
People laugh and criticize mom after she reveals how she makes 7-year-old clean and teaches him how to cook
How we choose to raise our children and the lessons we decide to ingrain in them from an early age differs from parent to parent.
It’s only natural, of course. Some mothers and fathers take a more disciplined approach, for example, while others prefer to let their kids go through a try and fail cycle so that they can learn right and wrong through their own experiences.
Now, for the most part, how one chooses to style their son or daughter’s upbringing is their business, no one else’s. Yet that doesn’t stop people commenting and criticizing online every time a debate is sparked over some parental decision or another…
I remember when I was younger, doing chores was considered part and parcel of everyday life. I mean for me and my siblings, of course, not only my mother.
Doing dishes, making beds, helping to prepare food before mealtimes… the list goes on and on.
I understand times change, but in my mind getting children to help out with tasks around the house – providing there’s no danger involved – is a great way to instill values and a worth ethic that will come in handy later on.
It seems, though, that not everyone agrees. According to reports, one mother found this out the hard way a few years back after she uploaded pictures of her son and shared her method of giving him chores to do with the internet.
The mom in question, 22-year-old Nikkole Paulun, reportedly explained how she proudly put her 7-year-old son, Lyle, to work around the house, where he would help out with things like cooking and cleaning.
Nothing too dramatic, I’m sure we can all agree, but that didn’t stop online detractors from verbally attacking her and expressing concern over the potential impact on the child’s emotional well-being.
The bulk of the critics targeted the fact that the mother had shared her son’s chores online, not only potentially making other parents question themselves, but also flagging the idea that the child might not want to have his daily activities shared with a large number of strangers online.
One woman went as far as to write in the comments that Nikkole couldn’t just let her child “be your slave. Or to do the chores that you yourself don’t want to do.”
Another wrote: “So I take it you can do everything ur teaching ur son to do or are you just putting pressure on ur child?”
A third added: “Don’t get me wrong… a child should know responsibility. .. but should not be operating a stove that young.“
A fourth wrote: “Lazy mother’s are sweeping the country. It’s good to teach them while they’re young but i notice alot of these single mom’s are just raising their boy’s to be the man that they wish they always had.“
There were many who defended Nikkole in the comments, too, with her post gaining viral status after it garnered over 8,000 comments and 156,000 interactions on Facebook.
Nikkole herself insisted that she enjoys doing housework and that her son Lyle “just helps along the way & earns allowance as well.
What’s more, she added that her then-one-year-old daughter, Ellie, would be following in her elder siblings steps and doing the same thing when she was a little older.
What do you think to Nikkole’s parenting approach and the criticism she got for it? Let us know your thoughts in the comments box.
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