Simplify the complex fraction: x−9x1−3x\dfrac{x - \dfrac{9}{x}}{1 - \dfrac{3}{x}}1−x3x−x9 (assume x≠0,3x \neq 0, 3x=0,3).
x+3x + 3x+3
x(x+3)x(x+3)x(x+3)
x+3x\dfrac{x + 3}{x}xx+3
x−3x - 3x−3