SOLUTION: Can you please explain how the equation (2) has been derived from equation (1)? I know the answer is correct, but don't know how to get from one to the other. Equation 1: {{{1

Question 11443: Can you please explain how the equation (2) has been derived from equation (1)? I know the answer is correct, but don't know how to get from one to the other.
Equation 1:
Equation 2:
Many thanks
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Add the fractions on the right. Common denominator is xy.
Invert both sides.

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