Simplify ((frac{1}{x^{-1}} + frac{1}{y^{-1}}))-1
-
A.
(frac{x}{y}) -
B.
xy -
C.
(frac{x}{y}) -
D.
(xy)-1
Correct Answer: Option C
Explanation
Simplify ((frac{1}{x^{-1}} + frac{1}{y^{-1}}))-1 = ((frac{1}{x^{-1}} + frac{1}{y^{-1}}))-1
= (x + y)-1 = (frac{(x)}{y})
= (frac{x}{y})