Question

$(8 { - }^{1} + 9 { - }^{1} + 6 { - }^{1} )$
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Answer 1

Answer:

I hope it's the answer....

Answer 2

Answer:

$\frac{29}{72}$

Step-by-step explanation:

${8}^{ - 1} + {9}^{ - 1} + {6}^{ - 1} \\ \\ = \frac{1}{ {8}^{1} } + \frac{1}{ {9}^{1} } + \frac{1}{ {6}^{1} } \\ \\ = \frac{1}{8} + \frac{1}{9} + \frac{1}{6} \\ \\ (lcm \: of \: 8 \:. \: 9 \: and \: 6 \: is \: 72) \\ \\ = \frac{(1 \times 9) + (1 \times 8) + (1 \times 12)}{72} \\ \\ = \frac{9 + 8 + 12}{72} \\ \\ = \frac{29}{72}$

Hence

${8}^{ - 1} + {9}^{ - 1} + {6}^{ - 1} = \frac{29}{72}$

hope it helps.