Hey there, math enthusiasts and problem – solvers! Get ready to dive headfirst into a mind – boggling mathematical conundrum that’s going to put your skills to the ultimate test! This isn’t just any run – of – the – mill math problem; it’s a complex, brain – teasing equation that’s designed to challenge even the most seasoned number – crunchers.
So, are you ready to prove your mettle? Grab your pencil, flex those mental muscles, and let’s see if you’ve got what it takes to solve this math mystery! The challenge is here—are you game?
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Answer：
- According to the order of arithmetic operations, calculate the division first：In an arithmetic expression without parentheses, when there is both division and addition/subtraction, division is calculated first.
- 12÷3=4.
- 4÷1=4.
At this point, the original expression becomes 4+4−1.
- Then calculate the addition and subtraction in sequence：Calculate from left to right. 4+4=8, 8−1=7.
So, 12÷3+4÷1−1=7.