Question

$1 - frac{x + 2}{x - 2}$
$x - 1 - frac{3}{x - 3}$
$x - frac{1}{x - 2} - frac{2x}{2 - x}$

Answer 1

1) (x-2-x-2)/(x-2)=-4/(x-2)

2) ((x^2-3x)-(x-3)-3)/(x-3)=(x^2-4x)/(x-3)

3) x +(2x-1)/(x-2)=(x^2-2x+2x-1)/(x-2)=(x^2-1)/(x-2)