Question

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Answer 1

Let the answer be X.

$let \: - \frac{2}{3} = a$

Therefore,

${a}^{ - 2 } \times {a}^{7} \times {a}^{ - 4} = x \\ {a}^{ - 2 + 7 - 4} = x \\ {a}^{1} = x$

Hence, X = a

i.e.,

$x = - \frac{2}{3}$

Answer 2

Answer:

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