Question

va rog,ajutați-mă dau coroana ​

Answer 1

$x - \frac{26}{100} \times x - 440 = \frac{3}{10} \times x \\ x - \frac{13x}{50} - 440 = \frac{3x}{10} \\ x - 440 = \frac{15x}{50} + \frac{13x}{50} = \frac{28x}{50} = \frac{14x}{25} \\ 25x - 25 \times 440 = 14x \\ 11x = 25 \times 440 \\ x = 1000$