Giải phương trình
$$\frac{x-1}{x+1}+\frac{3x-1}{x+2}-\frac{x-4}{x+5}+\frac{x-5}{x+6}=0$$
►|| The aim of life is self-development. To realize one's nature perfectly - that is what each of us is here for. ™ ♫
0 thành viên, 0 khách, 0 thành viên ẩn danh