Question

find the value of
$({4}^{ -1} + {5}^{ -1}) \div {3}^{2}$
​

Answer 1

Step-by-step explanation:

$( {4}^{ - 1} + {5}^{ - 1} ) \div {3}^{2}$

$( \frac{1}{4} + \frac{1}{5} ) \div {3}^{2}$

$\frac{9}{20} \times \frac{1}{ {3}^{2} } = \frac{9}{20} \times \frac{1}{9}$

$\frac{1}{20}$

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