字母系数分式方程无解的条件主要有以下两种情形,现分别举例说明. 一、字母系数分式方程化为整式方程后,整式方程的解使分式方程的最简公分母为零,这个整式方程的解是分式方程的增根,此时分式方程无解. There are mainly two kinds of conditions for the non-solvable condition of the fractional equation of the letter coefficient. Here are two examples. First, after the letter coefficient fractional equation is transformed into the integral equation, the solution of the integral equation causes the simplest common denominator of the fractional equation to be zero. The solution of this integral equation is an increasing root of the fractional equation, in which case the fractional equation has no solution.