Simplify the Compound Fractional Expression $\frac { x ^ { - 1 } + y ^ { - 1 } } { x ^ { - 2 } + y ^ { - 1 } }$

question 57

Essay

Simplify the compound fractional expression. $\frac { x ^ { - 1 } + y ^ { - 1 } } { x ^ { - 2 } + y ^ { - 1 } }$

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Definitions:

Cheque

A document that is written, dated, and contains a signature, instructing a bank to pay a certain amount of money to either the person holding it or to an individual named in the document.

Credited

The action of officially recognizing or adding an amount to an account, often referring to the depositing of funds or acknowledgment of income earned.

Account

A record or statement of financial transactions pertaining to an individual, business, or other entity.

Invoice

A document issued by a seller to a buyer that outlines the goods or services sold, their prices, and the payment terms.