Question

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

60. $5x+2y-z$

Short answer

The value of the expression $5x+2y-z$is $-3.$

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

Step-3 –Simplify the expression

$\begin{array}{c}5x+2y-z=5(-2)+2\left(6\right)-\left(5\right)\\ =-10+12-5\\ =-15+12\\ =-3.\end{array}$