Math, asked by ajsksajajs, 11 months ago

(5 power -1 - 7 power -1)

Answers

Answered by konrad509

1

$5^{-1}-7^{-1}=\dfrac{1}{5}-\dfrac{1}{7}=\dfrac{7}{35}-\dfrac{5}{35}=\dfrac{2}{35}$

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