\(\frac{4}{x} + 5 = \frac{1}{2};\), \(\frac{2x^2}{3x - 5} - 2x = 0.\)

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a) \(\frac{4}{x} + 5 = \frac{1}{2};\)

b) \(\frac{2x^2}{3x - 5} - 2x = 0.\)