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!
Ashley Graham Explains Why She Stopped Breastfeeding Her 5-Month-Old Twins
Ashley Graham is one of the most relatable models and public figures out there. After becoming the first-ever plus-size model to be featured on the cover of Sports Illustrated, she has made it her mission to spread the body positivity message. And since Graham is keeping it real in every aspect of her life, she also held nothing back throughout her pregnancies, showing what it really takes to be a mom.
Being a mom to a boy and 2 twins, Graham is spreading a message that every mom has a right to choose whether breastfeeding is right for them, regardless of society’s expectations.
In a recent interview, Graham got candid about the consequences of being pregnant that every woman goes through but prefers to not be too vocal about. The model said she also considered keeping some things to herself, admitting, “Especially with how your body is changing when you’re pregnant, and stretchmarks, and the saggy skin, formula, breastfeeding. Cause there’s also this whole thing with people telling you how to feed your child.”
Ashley proceeded to explain her experience with breastfeeding: “With my first kid, I was like, ’I can only breastfeed! This is the right way!’ Then I had the twins, and I was like, ’I’m not doing this. This is not working here. Both of you want both of these? This is a lot of work.’ So I stopped breastfeeding when they were 5 months, and I gave them the best formula that I could find… And these little guys are so strong and so happy.”
Ultimately, Graham believes it’s up to every mom to decide between formula or breastfeeding based on their personal experience. She drove her point home, saying, “I don’t think we should be telling people how we should be feeding our kids.”
The model then became even more relatable, sharing her physical struggles after giving birth. She said, “Your body just fills up with nutrition, and the baby sucks it out of you. And then the baby comes out and all of a sudden you’re just fully depleted of everything, so your hair falls out, you get acne, I mean, the weight doesn’t come off.”
Graham explained her candidness, saying, “I like to represent myself as someone who’s just happy with who I am. And I had a journey, like, it is a journey, body confidence, being okay with who you are is a journey… I don’t ever want to lie.” And we’re all grateful for the model sharing her experiences with us, as it makes mothers around the world feel seen and heard.
Preview photo credit ashleygraham / Instagram, ashleygraham / Instagram
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