Ready to test your brain?
This seemingly simple math equation is going viral online, challenging you to find the answer in 10 seconds.
It looks easy at first, but don’t be misled! Solving it right needs careful attention to the order of operations. Let’s analyze it.
Here’s the equation. Your task is to solve it in 10 seconds or less. Think you can? Before answering, let’s review PEMDAS, the order of operations:
- Parentheses
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
When solving an equation, do operations in parentheses first, then exponents. Next, do multiplication and division from left to right, and finally, addition and subtraction from left to right.
Now, let’s solve the equation step by step:
- Step 1: Multiplication and Division
- First, calculate .7 × 7 = 49
- Then, calculate .7 ÷ 7 = 1
- The equation becomes .49 – 1 + 7
- Step 2: Addition and Subtraction
- First, .49 – 1 = 48
- Then, .48 + 7 = 55
So, the answer is 55.