Вариант 1

Задание 1

1. a) $$ \frac{12a^6b}{27a^2b^3} = \frac{4a^4}{9b^2} $$
2. б) $$ \frac{3x^2 - 15x}{15x} = \frac{3x(x - 5)}{15x} = \frac{x - 5}{5} $$
3. в) $$ \frac{x^2 - 16}{2x - 8} = \frac{(x - 4)(x + 4)}{2(x - 4)} = \frac{x + 4}{2} $$