Question

Плиз, помогите, 23 бала даю​

Answer 1

k≠-4  k≠4

1/(k - 4) - 9/(k + 4) = 1/(k-4)*9/(k+4)

k + 4 - 9(k - 4) = 9

k + 4 - 9k + 36 = 9

-8k = -31

k = 31/8