Simplify the expression
x
−
2
/
7
y
−
2
/
3
(
x
1
/
8
y
−
1
/
6
)
−
1
/
7
x
3
/
4
y
−
2
/
7
\displaystyle \frac{{{x}^{{-{2}/{7}}}{y}^{{-{2}/{3}}}{\left({x}^{{{1}/{8}}}{y}^{{-{1}/{6}}}\right)}^{{-{1}/{7}}}}}{{{x}^{{{3}/{4}}}{y}^{{-{2}/{7}}}}}
x
3
/
4
y
−
2
/
7
x
−
2
/
7
y
−
2
/
3
(
x
1
/
8
y
−
1
/
6
)
−
1
/
7
. Write your answer in rational exponent form,using nonnegative exponents.
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