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!
A Cat and a Newborn Went Viral for Being Best Friends but People Are Worried, «Please Be Careful»
In the world of pet companionship, dogs often steal the spotlight for their perceived loyalty and affection towards humans, especially babies. Cats, on the other hand, have long been labeled as solitary and indifferent. But a heartening video shared on TikTok challenges this stereotype, showcasing the remarkable bond between a protective feline named Teddy and his human baby brother, William.
A bond that started from day one.
From the moment William entered the household, Teddy, the family cat, embraced him with open paws, assuming the role of a caring and watchful «big brother.» Contrary to expectations, Teddy didn’t display an ounce of jealousy but instead showered the newborn with affection and protection, much to the delight and surprise of his owners.
Capturing these precious moments on camera, William’s parents shared their growing friendship on TikTok, where it quickly gained attention from viewers worldwide. In the videos, Teddy is seen gently interacting with William, ensuring his safety and even playfully engaging with him in his baby seat. It’s evident that Teddy sees William as his own, forming an inseparable bond that transcends species.
One video went viral.
William and Teddy’s TikTok videos are a massive hit, with one in particular reaching almost 12 million views. Witnessing the cat’s tender and affectionate behavior towards the baby brings joy to all who watch their interactions. Whether it’s sleeping next to him, keeping watch over his dreams, or delicately holding him with his paws, the cat’s unwavering commitment to the baby is evident. Refusing to leave his side, the cat seems to intuitively understand the fragility and vulnerability of the little one, embodying a protective presence that touches the hearts of all who witness their bond.
Happy comments flooded in.
The touching videos shared by William’s parents evoke a range of emotions from viewers, with many expressing admiration for Teddy’s unwavering devotion to his baby brother. Comments flooding the videos reflect the universal appeal of their bond, with some jokingly suggesting that William may have become Teddy’s surrogate. «Could anything be more precious?» one user mentioned. Indeed, Teddy’s nurturing instincts and affectionate behavior have earned him the title of a first-rate babysitter in the eyes of his adoring fans.
While others worried about the cat and baby close together.
Some people expressed concerns about allowing pets near newborns. In one of the videos, we can see comments saying «Please be careful.» Allowing cats near babies is a matter of personal choice and depends on various factors, including the temperament of the cat, the health and safety concerns of the baby, and the supervision provided by the parents or caregivers.
While many cats can coexist peacefully with newborns and even develop strong bonds with them, it’s essential to exercise caution and take appropriate precautions to ensure the safety of both the baby and the cat. However, Teddy and William’s interactions challenge preconceived notions about cats’ personalities and showcase the depth of empathy and compassion these creatures are capable of displaying.
As Teddy continues to watch over William, offering comfort and companionship in his own feline way, their story serves as a heartening reminder of the transformative power of love, transcending boundaries of species and age. In a world often divided by differences, the pure and unconditional bond between a cat and a baby provides hope and warmth, reminding us of the inherent goodness that exists within us all.
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