86 – (14 + x) = 21 37 – (4 + x) = 9

Решим уравнения:

1. $$86 – (14 + x) = 21$$ $$14 + x = 86 - 21$$ $$14 + x = 65$$ $$x = 65 - 14$$ $$x = 51$$
2. $$37 – (4 + x) = 9$$ $$4 + x = 37 - 9$$ $$4 + x = 28$$ $$x = 28 - 4$$ $$x = 24$$

Ответ: 51; 24