Question

срочно помогите !!!
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Answer 1

$xy + 5 = 0 \\ 5 - y + 10 = 0 \\ \\ xy + 5 = 0 \\ - y = - 5 - 10 \\ \\ xy + 5 = 0 \\ y = 15 \\ \\ x \times 15 + 5 = 0 \\ y = 15 \\ \\ 15x = - 5 \\ y = 15$

$x = - \frac{5}{15} \\ y = 15 \\ \\ x = - \frac{1}{3} \\ y = 15$

ответ: (-1/3; 15)