One simple problem with math, that is common to solving many equations, is division by a fraction, such as 1/ (1/2) = 2. If I have one gallon of gasoline and divide by one half, I get two gallons of gas. This is perpetual motion, which is not possible. Solving equations often relies on this perpetual motion step.
Wow, you cannot properly do division and you want to show this to everyone in the forum?