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Ответ:

[tex] \frac{6}{5x - 20} - \frac{x - 5}{ {x}^{2} - 8x + 16 } = \frac{6}{5(x - 4)} - \frac{x - 5}{(x - 4)(x + 4)} = \frac{6(x + 4) - 5(x - 5)}{5(x - 4)(x + 4)} = \frac{6x + 24 - 5x + 25}{5(x - 4)(x + 4)} = \frac{x + 49}{5( x - 4)(x + 4)} = \frac{5 + 49}{5 \times 1 \times 9} = \frac{54}{45} = \frac{6}{5} = 1.2[/tex]