Answer:
-4
Step-by-step explanation:
Put the value of the variable (-1/2) where the variable (x) is and simplify the expression.
[tex]\dfrac{1}{x}-\dfrac{1}{x+1}=\dfrac{1}{-\dfrac{1}{2}}-\dfrac{1}{-\dfrac{1}{2}+1}\\\\=-2-\dfrac{1}{\left(\dfrac{1}{2}\right)}=-2-2=\boxed{-4}[/tex]
