## Elementary Algebra

The product of a negative real number and a negative real number is a positive real number. We convert the decimal into a fraction for the ease of simplification: $(-0.7)(-64)$ =$-\frac{7}{10}\times-\frac{64}{1}$ =$\frac{-7\times-64}{10}$ =$\frac{448}{10}$ =$44.8$