A mathematical equation is a mathematical statement that represents the equal relationship between two numbers or expressions. In this equation, 5-2-0 is to subtract 2 from 5 and then subtract 0 from the result, and the final result is 3. This equation can be verified by simple calculation: 5-2=3, 3-0=3, so the result of 5-2-0 is 3.
In addition, mathematical equations are also the basis of mathematical proof. Through the derivation and deformation of the equation, various mathematical theorems and conclusions can be proved.