\(\left(-2\right).\left(-7\right).\left(-5\right)+\left(-5\right).\left(-6\right)\)
\(=\left(-5\right).\left[\left(-2\right).\left(-7\right)+\left(-6\right)\right]\)
\(=\left(-5\right).\left[14+\left(-6\right)\right]\)
\(=\left(-5\right).8\)
\(=-40\)