Question

Упрости выражение.

(−2,2y−13x)+(15y+5,7x) =
x +
y.

Answer 1

$- 2.2y - 13x + 15y + 5.7x = x + y \\ 12.8y - 7.3x = x + y \\ - 7.3x - x = y - 12.8y \\ - 8.3x = - 11.8y \\ x = 11.8y \times \frac{10}{83} \\ x = 59y \times \frac{2}{83} \\ x = \frac{118}{83}y \\ y = \frac{83}{118} x$