Question

Решите: x-7/x+3=x-3/x+9

Answer 1

Решение:
$frac{x-7}{x-3} = frac{x - 3}{x + 9}$
(x-7)(x+9)=(x+3)(x-3)
x² + 2x - 63 = x² - 9
2x = 63 - 9
2x = 54
x = 27
Ответ: 
27