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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.

Lightning  Jul 7, 2018

### Best Answer

#1
+9558
+2

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.

Omi67  Jul 7, 2018
#1
+9558
+2
Best Answer

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.

Omi67  Jul 7, 2018

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