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At first glance, it seems that simple arithmetic operations with fractions should be easily handled by any middle school student. But in reality, easy examples often prove too difficult even for adults with higher education.
Recently, an exciting experiment was conducted in Japan. Scientists offered people born in the early 90s to solve a simple example. It turned out that out of all the respondents, only 60% answered correctly!
Notably, 30 years ago, exactly the same survey was conducted, and then more than 90% of people successfully coped with this task.
Now we offer you to test your knowledge as well. Look at the arithmetic operation below and solve it. Will you solve this task, or have your school knowledge been thoroughly forgotten?


