Answer
$$\frac{3\left(x+4\right)}{\left(x+7\right)\left(x+5\right)}$$
Work Step by Step
Simplifying the equation by cancelling out factors, we find:
$$\frac{3\left(x-5\right)\left(x+4\right)}{\left(x+7\right)\left(x+5\right)\left(x-5\right)}\\ \frac{3\left(x+4\right)}{\left(x+7\right)\left(x+5\right)}$$