## Precalculus (6th Edition) Blitzer

The solution for the indicated problem is $-12$.
Solve the given expression: Recall that $-\left( -a \right)=a,c\left( -b \right)=-cb$ \begin{align} & 1\left( -4 \right)+2\left( 5 \right)+3\left( -6 \right)=-4+10-18 \\ & =-12 \end{align} Hence, the solution for the indicated problem is $-12$.