分式方程是初中代数的主要内容.现将同学们与解分式方程有关的常见错误归纳如下,希望能引起同学们的警示.警示一:忘记验根例1解方程2/(x-1)-3/(x+1)=(x+3)/(x2-1).错解去分母,得2(x+1)-3(x-1)=x+3.解这个方程,得x=1.∴x=1是原方程的根.正解去分母,得 Fractional equation is the main content of junior high school algebra. Now students and solution equation common mistakes are summarized as follows, hoping to arouse students’ warning. ) 3 / (x + 1) = (x + 3) / (x2-1). Decompose the denominator to get 2 (x + 1) -3 (x- 1) = x + 3. Solve this equation, Get x = 1. ∴x = 1 is the root of the original equation. Positive solution to the denominator, too