1. The equation itself is contradictory and unsolvable.

2. Fractional equation is transformed into integral equation, and the range of unknown values is expanded, and the simplest common denominator is 0.

Equation has no solution:

The equation has no solution, which means that no number satisfies the equation within a certain range.

For example, the equation set X+Y = 4 12x+2Y = 10②, because the simplified equation ② is x+y=5, which contradicts equation ①, so this kind of equation set has no solution.

By solving the equation, we can avoid the difficulty of reverse thinking and directly list the equations with the quantity to be solved. There are many forms of equations, such as one-dimensional linear equation, two-dimensional linear equation, one-dimensional quadratic equation and so on. , can also be combined into equations to solve multiple unknowns.

In mathematics, an equation is a statement containing one or more variables. Solving an equation involves determining which variables have values that make the equation valid. Variables are also called unknowns, and the value of the unknowns satisfying the equation is called the solution of the equation.