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Step-by-step explanation:
-⅓^-3 = -27 --A
(2/3)-⁴=(3/2)⁴=81/16 ---B
x/y = -27/81/16=-16/3
y/x = -3/16
x/y + y/x=
-16/3-3/16=-16²-9²/3×16 =-337/48
(x/y +y/x)^-1=-48/337
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Answer:
x=-5
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