Linear equation of one variable We all know the story of Kong Rong letting pears. In fact, it is said that Kong Rong not only let pears, but also divided pears. It is said that Kong Rong once divided pears for children. The first child divided half of the distance and half of the pears for the second child, and half of the remaining pears for the second child. How many pears are there? The first child divided half of the distance and half of the pear = the first child divided half of the pear and half of the pear

Linear equation of one variable We all know the story of Kong Rong letting pears. In fact, it is said that Kong Rong not only let pears, but also divided pears. It is said that Kong Rong once divided pears for children. The first child divided half of the distance and half of the pears for the second child, and half of the remaining pears for the second child. How many pears are there? The first child divided half of the distance and half of the pear = the first child divided half of the pear and half of the pear

The first child shared half of the pear and half of the pear; the first child shared half of the remaining pear and half of the pear, and the remaining one was for himself. How many pears are there?
Suppose there are n pears in total, the first one gets n / 2 + 1 / 2 = (n + 1) / 2 (pears); the second one gets (1 / 2) [n - (n + 1) / 2] + 1 / 2
=(n-1) / 4 + 1 / 2 = (n + 1) / 4, so n = (n + 1) / 2 + (n + 1) / 4 + 1; the solution is n = 7, that is, there are 7 pears
That is, the first child gets 4, the second child gets 2, and Kong Rong gets 1