Question

x/x-3-4/3-x=0
Kak rewit?

Answer 1

$frac{x}{x-3}- frac{4}{3-x} =0\\ frac{x}{x-3}+ frac{4}{x-3}=0\\ frac{x+4}{x-3}=0\\x neq 3\\x+4=0\x=-4$

Ответ: -4