Question

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

61. $3x-y+4z$

Short answer

The value of the expression $3x-y+4z$is 8

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$3x-y+4z$.and the values of the variables are, $x=-2,y=6,z=5.$

Step-3 –Simplified the expression

$\begin{array}{c}3x-y+4z=3(-2)-\left(6\right)+4\left(5\right)\\ =-6-6+20\\ =-12+20\\ =8.\end{array}$