Question

Evaluate each expression if $x=-2,y=6,$and $z=5.$

$-x+4y-2z$

Short answer

The value of the expression $-x+4y-2z$is $16.$

Step-by-step solution

Step-1 –Concept of evaluating the expression

The value of the variable in the expression can be calculated by putting the value of variable in the expression.

Step-2 –Identifying the conditions

The given expression is$-x+4y-2z$ and the values of the variables are$x=-2,y=6,z=5.$

Step-3 –Simplifying the expression

$\begin{array}{c}-x+4y-2z=-(-2)+4\left(6\right)-2\left(5\right)\\ =2+24-10\\ =26-10\\ =16.\end{array}$