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.
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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!
Dad & Daughter Recreate High School Grad Photo After 18 Years – People Look Closer And Spot A Detail They Can’t Let Go
Seeing your child graduate from college or high school is one of the most special moments in your life as a parent.
Those who have experienced it will recall the sense of pride and uncontrollable happiness that arises when your not-so-little one completes a task they have been working toward for a very long time.
Dennis Roach, a Texas father, must have felt ten times better in 2018 since he was able to retake a 2000 photo of his daughter after she graduated from high school, and the outcome made people happy all around the world.
In 2000, Dennis celebrated his high school graduation with his toddler daughter Tori, which was a blessing.
They took a picture at the time, and Dennis gave his young girl a kiss. It was the fitting way to commemorate his momentous day.
It was Tori Roach who commemorated her high school graduation in 2018.
Naturally, Dennis was present to commemorate the event, and he and the other person came up with the brilliant idea of taking a fresh photo of the two of them from eighteen years ago.
In the last tale, Tori was cradled in her father’s arms and received another peck on the cheek.
Her 2000 and 2018 photos that she shared on Twitter were adored by fans. How well it will be accepted was beyond anyone’s prediction.
Under her photo, Tori added, “18 years later.” It received nearly 150,000 likes and 57,000 reposts before becoming viral.
Many others expressed their happiness with the picture in the comments section.
“This is the cutest thing ever,” someone said.
“One of the best pictures I have seen,” said an additional person. I’m wishing you and your family all the best.
“How beautiful…,” remarked a third.
However, the most intriguing aspect of the two images was undoubtedly the element that drew a lot of attention and comments from viewers.
One thing that was particularly noticeable was how little Tori’s father Dennis appeared to have aged in the two photos.
“What is the age of your father?” inquired someone.”He appears to be ageless.”
Another joker said, “I think you froze your father until you grow up.”
Did your dad age at all, dammit?A third made a joke.
Tori was shocked by the amount of interest in her post.
After graduating from high school, she was forced to clarify that her father, who was 37 at the time, wasn’t single.
She also discussed Dennis’s pride with People.
“There were a ton of notifications when I woke up. Individuals had resumed liking, commenting, and sharing. My father was really pleased with himself. Since we live in a tiny town, nothing similar to this rarely occurs. And he exclaimed, “That’s awesome!”
“I feel that not many other people get to experience that,” she continued, “so in a way, it brought me and my dad closer.”
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