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Simplify 1p - 1q ÷ \(\...

Simplify 1p - 1q ÷ pq - qp

A.

1pq

B.

1p+q

C.

1pq

D.

1pq(pq)

Correct answer is B

1p - 1q ÷ pq - qp = qppq ÷ p2q2pq

qppq x pqp2q2 = qpp2q2

(pq)(p+q)(pq)

= 1p+q