1) Сократите дробь: a) $$ \frac{y^2-16}{3y+12} $$ б) $$ \frac{2a-4}{3(a-2)} $$

a) $$ \frac{y^2-16}{3y+12} = \frac{(y-4)(y+4)}{3(y+4)} = \frac{y-4}{3} $$ Ответ: $$ \frac{y-4}{3} $$ б) $$ \frac{2a-4}{3(a-2)} = \frac{2(a-2)}{3(a-2)} = \frac{2}{3} $$ Ответ: $$ \frac{2}{3} $$