Answer
$$\frac{16}{x}$$
Work Step by Step
Dividing by a fraction is equivalent to multiplying by the reciprocal of the fraction.
$$\frac{\frac{4}{x}}{\frac{2}{8}}=\frac{4}{x}\times \frac{8}{2}=\frac{4}{x}\times 4=\frac{16}{x}$$
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