Looks Super Easy... But It Tricks Everyone! 😵‍💫 Can YOU Solve It? 🔥

Added: 2026-06-01

[00:00:00]What is the value of the expression 7 s squared minus open parentheses 30 divided by three multiplied by five close parentheses then divided by two s squared?

[00:00:13]Which option do you think is the correct answer to this question?

[00:00:17]This equation seems very simple, but it tricks almost everyone.

[00:00:22]Let's dive in and break it down a step-by-step together.

[00:00:25]At the beginning, many people go straight to the expression inside the parentheses because they believe parentheses have a higher priority than the other operations.

[00:00:36]And they immediately perform the multiplication between three and five because they think multiplication has a higher priority than division.

[00:00:46]So, they simplify this equation and write it as 7 s squared minus 30 divided by 15 inside the parentheses then divided by two s squared.

[00:00:58]In the next step, they move on to the division between 30 and 15 and replace this equation with 7 s squared minus two divided by two s squared.

[00:01:08]Then, they go to the exponents and simplify this equation to 49 minus two divided by four.

[00:01:16]In the final step, they go to the division between two and four because they believe division has a higher priority than subtraction.

[00:01:25]So, they rewrite this equation as 49 minus 0.5 which finally gives them the answer 48.5.

[00:01:34]Then, without any hesitation, they quickly say that option C is the correct answer to this question.

[00:01:42]But, I have to say we were tricked and it's not the correct answer to this question.

[00:01:49]Also, some other people when solving this question first go straight to the expression 7 s squared and simplify to 49 minus 30 divided by three times five inside the parentheses then divided by two s squared.

[00:02:04]And the next step, they focus on the expression inside the parentheses and the solve the division between 30 and three.

[00:02:12]So, they simplify this equation to 49 minus 10 times five inside the parentheses then divided by two s squared.

[00:02:21]Then, they perform the multiplication between 10 and five inside the parentheses and write this equation as 49 minus 50 divided by two s squared.

[00:02:33]Next, they perform the subtraction between 49 and 50 and simplify this equation to negative one divided by two s squared.

[00:02:42]In the final step, they handle the exponent and write this equation as negative one divided by four which ultimately gives them the answer negative 0.25.

[00:02:53]And immediately, they conclude that option A is the correct answer to this question.

[00:03:00]However, that's definitely wrong.

[00:03:04]All right. Now, let me explain the step-by-step how to solve this equation properly.

[00:03:10]To solve this question, we must follow the rule that is called PEMDAS. And this rule, P stands for parentheses, E stands for exponent, M stands for multiplication, D stands for division, A stands for addition, and S stands for subtraction.

[00:03:28]It means that we need to perform all of the operations step-by-step in order from top to bottom.

[00:03:35]Okay. As you can see in the image, in this equation, first we have an exponent then a subtraction sign followed by parentheses then a division sign and finally another exponent. According to the PEMDAS rule, first we should have stopped at the parentheses because parentheses have the highest priority over all other operations.

[00:03:59]And inside the parentheses, first we have a division sign and then a multiplication sign.

[00:04:05]It's very important to note that multiplication and division have exactly the same level of priority.

[00:04:11]In this situation, we must start from the left and move toward the right performing these two operations in order.

[00:04:19]So, first we do the division between 30 and 3 and this equation simplifies to 7 s squared minus 10 * 5 inside the parentheses then divided by 2 s squared.

[00:04:33]In the next step, we handle the multiplication between 10 and 5 and this equation simplifies to 7 s squared minus 50 divided by 2 s squared.

[00:04:44]Next, it's time to handle the exponents because according to the PEMDAS rule, after parentheses, exponent has a higher priority than the other operation.

[00:04:54]So, [snorts] we can rewrite this equation as 49 minus 50 divided by 4.

[00:05:00]In the final step, we perform the division between 50 and 4 because division has a higher priority than subtraction.

[00:05:09]So, this equation simplifies to 49 minus 12.5 which finally gives us the answer 36.5.

[00:05:18]That's correct. Option B is the correct answer to this question.