Mathematical problems Li Bai does not leave the wine every day, and the three meals are added in turn. The number of meals multiplied by two adds up to 146; If you want to know how many poets there are, you need to know how many frames there are in each meal. Set breakfast x- 1 barrel, lunch x barrel, dinner x+ 1 barrel, and

(x- 1)x+x(x+ 1)+(x- 1)(x+ 1)= 146-& gt； 3x^2= 147->； x=7

6 barrels for breakfast, 7 barrels for lunch and 8 barrels for dinner.

How to solve it by arithmetic?

Arithmetically, because 146 is the sum of three close products of two numbers, each product of two numbers should be close to 146/3≈48=6*8, so it is easy to think of trying with numbers of 6, 7, 8 and 3.