Mathematics for IGCSE & O level - Indices 2 (Section 4 - No. 2)

What value of *x* satisfies ( x^{-1} = rac{1}{5} )?

-5

(rac{1}{5})

Because the question states that ( x^{-1} = rac{1}{x} ), and (rac{1}{x} = rac{1}{5}), then x = 5.