Сократите дробь: \(\dfrac{x^2-49}{6x+42}\) . \(\frac{x-7}{6}\) \(x-7\) \(\frac{x+7}{6}\)
Задание

Сократите дробь:
\(\dfrac{x^2-49}{6x+42}\) .

  • \(\frac{x-7}{6}\)
  • \(x-7\)
  • \(\frac{x+7}{6}\)