## Prealgebra (7th Edition)

$-\frac{62a}{3}$
Multiplying a positive number by a negative number yields a negative result. $16a^2\times -\frac{31}{24a}=-\frac{16a^2\times31}{24a}=-\frac{16a^2\times31\div8a}{24a\div8a}=-\frac{62a}{3}$