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If
(
5
7
)
−
12
×
(
14
125
)
−
12
=
(
x
y
)
−
12
\left(\frac{5}{7}\right)^{-12} \times \left(\frac{14}{125}\right)^{-12} = \left(\frac{x}{y}\right)^{-12}
(
7
5
)
−
12
×
(
125
14
)
−
12
=
(
y
x
)
−
12
…
Mathematics
Problem
If
(
5
7
)
−
12
×
(
14
125
)
−
12
=
(
x
y
)
−
12
\left(\frac{5}{7}\right)^{-12} \times \left(\frac{14}{125}\right)^{-12} = \left(\frac{x}{y}\right)^{-12}
(
7
5
)
−
12
×
(
125
14
)
−
12
=
(
y
x
)
−
12
, then find the value of
y
x
\frac{y}{x}
x
y
. (A)
3
25
\frac{3}{25}
25
3
(B)
25
2
\frac{25}{2}
2
25
(C)
2
25
\frac{2}{25}
25
2
(D)
25
14
\frac{25}{14}
14
25
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