Correct Answer: Option B

Explanation

2\(^7\) = 8\(^{5-x}\)

2\(^7\) = 2\(^{3(5 - x)}\)

7 = 15 - 3x

7 - 15 = - 3x

-8 = -3x

x = \(\frac{8}{3}\)

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