(1)去分母得:4x-8=3x+9, 解得:x=17, 经检验x=17是分式方程的解; (2)去分母得:3x=4x-4, 解得:x=4, 经检验x=4是分式方程的解; (3)去分母得:600-480=8x, 解得:x=15, 经检验x=15是分式方程的解; (4)去分母得:x-5=2x-5, 解得:x=0, 经检验x=0是分式方程的解; (5)去分母得:1+3x-6=x-1, 解得:x=4, 经检验x=4是分式方程的解; (6)去分母得:2x+9=12x-21+6x-18, 解得:x=3, 经检验x=3是分式方程的解; (7)去分母得:2=3(1-x), 解得:x=, 经检验是分式方程的解; (8)去分母得:x+1=(x-2)(x-1)-x2+1, 解得:x=, 经检验是分式方程的解; (9)去分母得:2x(x+2)+2(x-1)=2(x-1)(x+2), 整理得:x=-, 经检验是分式方程的解; (10)去分母得:(3-2x)(x-3)-(1-x)(x-3)=(1-x)(x+2), 整理得:3x-9-2x2+6x-x+3+x2-3x=x+2-x2-2x,即6x=11, 解得:x=, 经检验是分式方程的解; (11)去分母得:(x-1)2-x(x+1)=4, 整理得:x=-1, 经检验x=-1是增根,原分式方程无解. |