Question

Помогите 4x+5/x-4-x+17/x-4=

Answer 1

$frac{4x+5}{x-4}- frac{x+17}{x-4}= frac{4x+5-x-17}{x-4} = frac{3x-12}{x-4}= frac{3(x-4)}{x-4}=3$