Question

\(\dfrac{x-3}{x-5}=\dfrac{5+x}{x-11}\)

Answer 1

x−3/x−5=5+x/x−11           (1)
ĐKXĐ: x-5≠0 và x-11≠0
(1)<=>(x-3)(x-11)/(x-5)(x-11)=(x-5)(5+x)/(x-11)(x-5)
    <=>x^2-11x-3x+33=5x+x^2-25-5x
​    <=>x^2-11x-3x-5x-x^2+5x=-25-33
​    <=>-14x=-58
​    <=>x=29/7