Question

Решите систему уравнений

Answer 1

$x = \frac{2}{3} + \frac{4}{3} y \\ 9( \frac{2}{3} + \frac{4}{3} y) {}^{2} - 16y {}^{2} = 20 \\ y = 1 \\ x = \frac{2}{3} + \frac{4}{3} \times 1 \\ x = 2$

(x;y) = (2;1)