## Precalculus (6th Edition)

$\color{blue}{\dfrac{26}{5} \text{ or } 5.2}$
Substitute the given values of the variables to obtain: $=(-1-2) \div 5\cdot(-2)+4$ Simplify within the parentheses to obtain: $=(-3) \div 5 \cdot (-2) + 4$ Perform the division: $=-\dfrac{3}{5} \cdot (-2) + 4$ Multiply: $=\dfrac{6}{5} + 4 \\=\dfrac{6}{5} + \dfrac{20}{5}$ Add: $\\=\dfrac{6+20}{5} \\=\color{blue}{\dfrac{26}{5} \text{ or } 5.2}$