Question 11
Algebraic ExpressionsSimplify (1/x−1 ÷ 1/y−1)−1
- A.x/y
- B.xy
- C.y/x
- D.(xy)−1
Show the answer and explanation
Answer: C (y/x)
Explanation
1/x−1 = x and 1/y−1 = y, so the bracket is x/y. Its reciprocal is y/x.
Simplify (1/x−1 ÷ 1/y−1)−1
Answer: C (y/x)
1/x−1 = x and 1/y−1 = y, so the bracket is x/y. Its reciprocal is y/x.