The mathematical formula of (x+52.8) * 5-3.9343/0.5-10x is 520. 13 14.

Add 52.8 to a number, multiply it by 5, subtract 3.9343, divide it by 0.5, and finally subtract ten times that number. The result is 520. 13 14. Set the number to x and bring it into (x+52.8) * 5-3.9343/0.5-10x. After simplification, x is eliminated, so no matter what the value of x is, the final result is 520

The list is as follows:

Let X=3 and bring in (x+52.8) * 5-3.9343/0.5-10x.

Namely: (3+52.8) * 5-3.9343/0.5-10 * 3.

The simplified result is: 520.438+0438+04.