Steps to solve the fractional equation:
One, go to the denominator. Both sides of the equation are multiplied by the simplest common denominator of each denominator at the same time, and the fractional equation is transformed into an integral equation;
Second, solve the whole equation;
Third, check. Bring the solution of the square equation to the simplest common denominator, so that the root of the simplest common denominator is the addition of the fractional equation. The root that makes the simplest common denominator non-zero is the root of the original fractional equation.