Question

ajutor..... ajutati-ma va roooooogggg​

Answer 1

$x + y = 500$

$x + (500 - y) \times ( \frac{5}{13}) = 300$

$x + \frac{2500}{13 - 5y}13 = 300$

$\frac{8x}{13} = \frac{(3900 - 2500)}{13}$

$8x = 600$

$x = \frac{150}{2}$

$x = 75$