# How do you simplify (5x^2 - 5)/(3x^2 + 3x)?

You can collect $5$ and $3 x$ to get:
$\frac{5 \left({x}^{2} - 1\right)}{3 x \left(x + 1\right)} = \frac{5 \cancel{\left(x + 1\right)} \left(x - 1\right)}{3 x \cancel{\left(x + 1\right)}} = \frac{5 \left(x - 1\right)}{3 x}$