That is to say: (the price of the ball minus 13 yuan's 6 horns)+(the price of the ball minus 4 yuan's 5 horns) = the price of the ball, then removing the brackets becomes: the price of the ball-13 yuan's 6 horns+the price of the ball -4 yuan's 5 horns = the price of the ball * 2- 13 yuan's 6 horns -4 yuan's 5 horns. That is to say, 18 yuan 1 the angle is 1 the price of the ball. If it is not so troublesome, it can be directly based on: the difference between two losses is equal to their sum. Their sum is the price of the ball. So directly: 13 yuan 60 Angle +4 yuan 50 Angle = 18 yuan 1 Angle A; Golf fee 18 yuan 1 jiao.