Question

Найдите корень уравнения
1. 8/x-4 = 4/x-8
2. 1/x+9 + 1/x-9 = 0

Answer 1

$8(x - 8) = 4(x - 4) \\ 8x - 64 = 4x - 16 \\ 4x = 48 \\ x = 12$

$x - 9 + x + 9 = 0 \\ 2x = 0 \\ x = 0$