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# Help!

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The operation $*$ is defined for non-zero integers as follows: $a * b = \frac{1}{a} + \frac{1}{b}$. If $a+b = 9$ and $a \times b = 20$, what is the value of $a*b$? Express your answer as a common fraction.

Jul 7, 2018

#1
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The operation $*$ is defined for non-zero integers as follows: $a * b = \frac{1}{a} + \frac{1}{b}$. If $a+b = 9$ and $a \times b = 20$, what is the value of $a*b$? Express your answer as a common fraction.

Jul 7, 2018

The operation $*$ is defined for non-zero integers as follows: $a * b = \frac{1}{a} + \frac{1}{b}$. If $a+b = 9$ and $a \times b = 20$, what is the value of $a*b$? Express your answer as a common fraction.